id:A104777 - OEIS Search Results

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Squares of numbers congruent to 1 or 5 mod 6.

+0
2

1, 25, 49, 121, 169, 289, 361, 529, 625, 841, 961, 1225, 1369, 1681, 1849, 2209, 2401, 2809, 3025, 3481, 3721, 4225, 4489, 5041, 5329, 5929, 6241, 6889, 7225, 7921, 8281, 9025, 9409, 10201, 10609, 11449, 11881, 12769, 13225, 14161, 14641, 15625, 16129 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Exponents of powers of q in expansion of eta(q^24).`
	EXAMPLE	`eta(q^24) = q - q^25 - q^49 + q^121 + q^169 - q^289 - q^361 + ...`
	PROGRAM	`(PARI) a(n)=(3*n-1-n%2)^2`
	CROSSREFS	`Cf. a(n)=A007310(n)^2=1+24*A001318(n-1).` `Sequence in context: A110013 A109861 A106564 this_sequence A131706 A110015 A110586` `Adjacent sequences: A104774 A104775 A104776 this_sequence A104778 A104779 A104780`
	KEYWORD	`nonn`
	AUTHOR	`Michael Somos, Mar 24 2005`

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

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