BBC Russian

Svoboda | Graniru | BBC Russia | Golosameriki | Facebook

The OEIS is supported by the many generous donors to the OEIS Foundation.

A356318

Numbers k such that the least j >= k for which k and A276086(j) are coprime is a nontrivial multiple of k, where A276086 is the primorial base exp-function.

3, 10, 15, 35, 42, 70, 77, 105, 154, 231, 286, 330, 385, 429, 462, 715, 770, 858, 1001, 1155, 1430, 2002, 2145, 2431, 2730, 3003, 3094, 3315, 4199, 4290, 4641, 4862, 5005, 6006, 6630, 7293, 7735, 8398, 9282, 10010, 12155, 12597, 14586, 15015, 15470, 17017, 20995, 23205, 24310, 25194, 29393, 33915, 34034, 35530, 36465 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Numbers k such that k divides A356309(k) and A356309(k) > k.` `Numbers k for which A356302(k) is a nonzero multiple of k.`
	LINKS	`Table of n, a(n) for n=1..55.` `Index entries for sequences related to primorial base`
	PROG	`(PARI) isA356318(n) = { my(u=A356302(n)); (u && !(u%n)); }; \\ Needs also code from A356302.`
	CROSSREFS	`Setwise difference A356316 \ A324583. Intersection of A324584 and A356316.` `Cf. A276086, A356162, A356302, A356309, A356315, A356319.` `Sequence in context: A192163 A129307 A186575 * A233312 A330940 A351010` `Adjacent sequences: A356315 A356316 A356317 * A356319 A356320 A356321`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen, Nov 04 2022`
	STATUS	`approved`

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 8 19:56 EDT 2024. Contains 375759 sequences. (Running on oeis4.)