id:A110153 - OEIS Search Results

Search: id:A110153

Displaying 1-1 of 1 results found.

page 1

G.f.: A(x) = Product_{n>=1} 1/(1 - 3^n*x^n)^(3/3^n).

+0
5

1, 3, 12, 39, 138, 426, 1461, 4458, 14655, 45309, 145479, 443037, 1427196, 4329696, 13655325, 41795679, 131102229, 397649811, 1247247507, 3775785681, 11761535064, 35770717695, 110693177805, 335003030301, 1040296817955 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`A(x) = 1 + 3x + 12x^2 + 39x^3 + 138x^4 + 426x^5 +... =` `1/[(1-3x)(1-9x^2)^(1/3)(1-27x^3)^(1/9)(1-81x^4)^(1/27)*...]`
	PROGRAM	`(PARI) a(n)=polcoeff(prod(k=1, n, 1/(1-3^kx^k+xO(x^n))^(3/3^k)), n)`
	CROSSREFS	`Cf. A110152, A110154, A110155, A110156.` `Sequence in context: A055294 A029858 A123109 this_sequence A122994 A062311 A034956` `Adjacent sequences: A110150 A110151 A110152 this_sequence A110154 A110155 A110156`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Jul 14 2005`

page 1

Search completed in 0.002 seconds

Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research