|
| |
|
|
A222226
|
|
In the number n, replace all (decimal) digits '1' with '9' and vice versa.
|
|
1
|
|
|
|
0, 9, 2, 3, 4, 5, 6, 7, 8, 1, 90, 99, 92, 93, 94, 95, 96, 97, 98, 91, 20, 29, 22, 23, 24, 25, 26, 27, 28, 21, 30, 39, 32, 33, 34, 35, 36, 37, 38, 31, 40, 49, 42, 43, 44, 45, 46, 47, 48, 41, 50, 59, 52, 53, 54, 55, 56, 57, 58, 51, 60, 69, 62, 63, 64, 65, 66
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,2
|
|
|
COMMENTS
|
The map which is applied to primes in A171050.
|
|
|
LINKS
|
|
|
|
MATHEMATICA
|
a[n_]:= IntegerDigits[n]/.{1->9, 9->1} // FromDigits; Table[a[n], {n, 0, 80}] (* Vincenzo Librandi, Jul 30 2013 *)
|
|
|
PROG
|
(PARI) A222226(n, d=[0, 9, 2, 3, 4, 5, 6, 7, 8, 1])=sum(i=1, #n=digits(n), d[n[i]+1]*10^(#n-i)) \\ gives correct value for n=0 iff d[1]=0, since digits(0)=[] in PARI (v.2.6)
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn,base,easy
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
