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#50 by Michael De Vlieger at Sun Sep 25 09:34:29 EDT 2022
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#49 by Hugo Pfoertner at Sun Sep 25 01:49:58 EDT 2022
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#48 by Jon E. Schoenfield at Sun Sep 25 01:28:09 EDT 2022
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#47 by Jon E. Schoenfield at Sun Sep 25 01:28:04 EDT 2022
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| EXAMPLE
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2^4 + 2^7 = 144; , a square, thus 144 is a term.
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| STATUS
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proposed
editing
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#46 by Karl-Heinz Hofmann at Fri Sep 23 03:20:37 EDT 2022
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Discussion
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| Fri Sep 23
| 07:55
| Karl-Heinz Hofmann: Yes, I like it and I think its time now for the next step. ;-)
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| 07:59
| Karl-Heinz Hofmann: Yes, I like it and I think its time now for the next step. ;-)
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#45 by Michel Marcus at Fri Sep 23 03:08:53 EDT 2022
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| COMMENTS
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The consecutive terms A272711(2..24) are the terms a(1..23) here. But beyond it differs more and more.
a(n) with odd n are the terms of A000302 and a(n) with even n are the terms of A002063.
Note that a(n) = A272711(n+1) for n=1..23, but beyond it differs more and more.
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| FORMULA
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a(n) = 9 * 2^(n-2) if n is even. (see A002063).
a(n) = 2^(n+1) if n is odd. (see A000302).
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| STATUS
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proposed
editing
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Discussion
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| Fri Sep 23
| 03:17
| Karl-Heinz Hofmann: Thank you very much Michel.
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| 03:30
| Michel Marcus: ok like this ?
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#44 by Karl-Heinz Hofmann at Thu Sep 22 19:42:25 EDT 2022
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Discussion
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| Thu Sep 22
| 20:06
| Karl-Heinz Hofmann: @Michel: your Code is correct. Sorry, sorry ..... Pari is definetly not my language.
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#43 by Karl-Heinz Hofmann at Thu Sep 22 19:41:39 EDT 2022
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| COMMENTS
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Odda(n) with odd n are the terms of A000302 and a(n) with even n are the terms of A002063.
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| STATUS
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proposed
editing
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#42 by Karl-Heinz Hofmann at Thu Sep 22 19:34:36 EDT 2022
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#41 by Karl-Heinz Hofmann at Thu Sep 22 19:11:13 EDT 2022
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Discussion
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| Thu Sep 22
| 19:22
| Karl-Heinz Hofmann: @Michel : Overthink your PARI? I´m not the PARI Guru but my Pari Code: for(n=0,34,if(n%2,print1(9*2^(n-3),", "),print1(2^n,", "))) gives the right terms. (You should swap the terms).
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| 19:34
| Karl-Heinz Hofmann: Sorry, correction: begin with 2 for(n=2,34,if(n%2,print1(9*2^(n-3),", "),print1(2^n,", ")))
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