id:A063725 - OEIS Search Results

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Number of solutions to x^2 + y^2 = n in positive integers.

+0
4

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

	OFFSET	`0,6`
	LINKS	`T. D. Noe, Table of n, a(n) for n = 0..10000`
	FORMULA	`G.f.: (Sum_{m=1..inf} x^(m^2))^2.`
	CROSSREFS	`Cf. A063691, A063730.` `Sequence in context: A091979 A029430 A092303 this_sequence A084888 A091400 A129448` `Adjacent sequences: A063722 A063723 A063724 this_sequence A063726 A063727 A063728`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Aug 23 2001`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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