A027998 - OEIS

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A027998

Expansion of Product(1+q^m)^(m^2); m=1..inf.

1, 1, 4, 13, 31, 83, 201, 487, 1141, 2641, 5972, 13309, 29248, 63360, 135688, 287197, 601629, 1247909, 2565037, 5226816, 10565132, 21192569, 42202909, 83466925, 163999684, 320230999, 621579965 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	FORMULA	`a(n) = 1/nSum_{k=1..n} A078307(k)a(n-k). - Vladeta Jovovic (vladeta(AT)eunet.rs), Nov 22 2002`
	CROSSREFS	`Sequence in context: A097122 A116411 A106337 * A026567 A036487 A184632` `Adjacent sequences: A027995 A027996 A027997 * A027999 A028000 A028001`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 16 20:07 EST 2012. Contains 205956 sequences.