id:A073721 - OEIS Search Results

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Remainder of division Sigma[n]/PrimePi[n] equals zero.

+0
2

2, 3, 5, 6, 7, 14, 15, 21, 29, 38, 44, 57, 66, 78, 92, 94, 95, 106, 108, 114, 116, 118, 120, 133, 154, 174, 177, 182, 188, 232, 255, 300, 304, 305, 349, 351, 359, 413, 417, 418, 468, 488, 506, 526, 595, 615, 629, 688, 872, 945, 954, 1001, 1002, 1006, 1011, 1018 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`A000203(n)/A000720(n) is integer`
	MATHEMATICA	`Do[s=Mod[DivisorSigma[1, n], PrimePi[n]]; If[s==0, Print[n]], {n, 1, 2500}]`
	CROSSREFS	`Cf. A000203, A000720, A073722-A073724.` `Sequence in context: A088968 A057924 A103538 this_sequence A090745 A002229 A077674` `Adjacent sequences: A073718 A073719 A073720 this_sequence A073722 A073723 A073724`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Aug 05 2002`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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