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A307494 Expansion of Product_{j>=1} 1/(1 - j*(-1 + Product_{k>=1} 1/(1 - k*x^k))^j). 1
1, 1, 6, 30, 145, 680, 3151, 14394, 65217, 293223, 1310255, 5820697, 25725139, 113161286, 495659656, 2162471602, 9399682398, 40716499477, 175798072996, 756709512011, 3247830724594, 13901967775738, 59352638426839, 252778786749676, 1074061758972744, 4553583433874616, 19264461634793094 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
FORMULA
G.f.: g(g(x) - 1), where g(x) = g.f. of A006906.
MATHEMATICA
nmax = 26; CoefficientList[Series[Product[1/(1 - j (-1 + Product[1/(1 - k x^k), {k, 1, nmax}])^j), {j, 1, nmax}], {x, 0, nmax}], x]
CROSSREFS
Sequence in context: A276022 A046945 A216045 * A316593 A089817 A364460
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Apr 15 2019
STATUS
approved

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Last modified February 26 17:08 EST 2024. Contains 370352 sequences. (Running on oeis4.)