id:A094470 - OEIS Search Results

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Numbers n such that phi(n) | sigma_18(n). A015759 seems to be a true subsequence here.

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2

1, 2, 3, 6, 22, 33, 66, 262, 750, 786, 2182, 6546, 8646, 56946, 72006, 162066, 222386, 626406, 667158, 737286, 857526, 1223123, 1489686, 1782726, 2446246, 2939046, 3669369, 4388406, 4780947, 6804006, 7338738, 9561894, 10761126, 12157926 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`sigma_18(n) is the sum of the 18th powers of the divisors of n (A013966). Conjecture: analogous sequences with any 4j+2 exponent instead of 18, includes all terms of A015759 [with exponent=2].`
	CROSSREFS	`Cf. A015759, A013966, A000010.` `Sequence in context: A007501 A015773 A015768 this_sequence A015764 A015759 A000616` `Adjacent sequences: A094467 A094468 A094469 this_sequence A094471 A094472 A094473`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), May 25 2004`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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