A156733 - OEIS

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A156733

Euler transform of n*A065958(n).

1, 1, 11, 41, 176, 606, 2391, 8091, 28636, 95056, 316048, 1014240, 3237325, 10082015, 31109500, 94352346, 283209381, 838650191, 2458835711, 7127912979, 20471486368, 58224189612 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	FORMULA	`a(n) = (1/n)Sum_{k=1..n} sigma_2(k^2)a(n-k) for n>0, with a(0) = 1.`
	CROSSREFS	`Cf. A001157, A156303.` `Sequence in context: A075985 A139933 A199209 * A079304 A118572 A201709` `Adjacent sequences: A156730 A156731 A156732 * A156734 A156735 A156736`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna and Vladeta Jovovic (vladeta(AT)eunet.yu), Feb 14 2009`

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.