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A032308 "EFK" (unordered, size, unlabeled) transform of 3,3,3,3,... 0
3, 3, 12, 12, 21, 48, 57, 84, 120, 228, 264, 399, 516, 732, 1119, 1416, 1884, 2532, 3324, 4296, 6168, 7545, 9984, 12684, 16500, 20577, 26688, 34572, 43032, 54264, 68232, 84972, 106176, 131664, 162507, 205680, 249888 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

C. G. Bower, Transforms (2)

FORMULA

G.f.: prod(k=1..inf) (1+3*x^k).

CROSSREFS

Sequence in context: A066437 A153270 A065957 * A117856 A073055 A074850

Adjacent sequences:  A032305 A032306 A032307 * A032309 A032310 A032311

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net)

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Last modified February 17 18:27 EST 2012. Contains 206066 sequences.