id:A001876 - OEIS Search Results

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Number of divisors of n of form 5k+1.

+0
2

0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 2, 1, 2, 1, 1, 2, 2, 1, 2, 1, 2, 1, 1, 1, 2, 2, 2, 2, 1, 1, 3, 1, 1, 1, 1, 2, 3, 1, 2, 1, 2, 1, 3, 1, 1, 2, 2, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 2, 2, 1, 4, 1, 1, 1, 1, 2, 3, 1, 1, 1, 2, 2, 3, 1, 2 (list; graph; listen)

	OFFSET	`0,7`
	FORMULA	`G.f.: Sum x^(5n+1)/(1-x^(5n+1)), n=0..inf.`
	CROSSREFS	`For numbers of divisors of n of form 5k+i (i=1, 2, 3, 4) see: this sequence, A001877, A001878, A001899.` `Cf. A001877, A001878, A001899.` `Sequence in context: A133687 A097587 A001179 this_sequence A033182 A053797 A002635` `Adjacent sequences: A001873 A001874 A001875 this_sequence A001877 A001878 A001879`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 25 13:47 EST 2009. Contains 167481 sequences.

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