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 A307258 Expansion of (1/(1 + x)) * Product_{k>=1} 1/(1 - k*x^k/(1 + x)^k). 1
 1, 0, 2, -1, 5, -11, 36, -107, 311, -850, 2208, -5519, 13566, -33562, 84937, -220307, 579413, -1522616, 3954016, -10100863, 25416877, -63324271, 157248035, -391478354, 980410093, -2470810086, 6253495883, -15846525758, 40093721908, -101116823798, 254093749587, -636547773777 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Inverse binomial transform of A006906. LINKS FORMULA a(n) = Sum_{k=0..n} (-1)^(n-k)*binomial(n,k)*A006906(k). MAPLE a:=series((1/(1+x))*mul(1/(1-k*x^k/(1+x)^k), k=1..100), x=0, 32): seq(coeff(a, x, n), n=0..31); # Paolo P. Lava, Apr 03 2019 MATHEMATICA nmax = 31; CoefficientList[Series[1/(1 + x) Product[1/(1 - k x^k/(1 + x)^k), {k, 1, nmax}], {x, 0, nmax}], x] Table[Sum[(-1)^(n - k) Binomial[n, k] Total[Times @@@ IntegerPartitions[k]], {k, 0, n}], {n, 0, 31}] CROSSREFS Cf. A006906, A281425, A294501, A307260, A318127. Sequence in context: A277279 A049950 A095216 * A174317 A144237 A350742 Adjacent sequences:  A307255 A307256 A307257 * A307259 A307260 A307261 KEYWORD sign AUTHOR Ilya Gutkovskiy, Apr 01 2019 STATUS approved

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Last modified June 25 03:59 EDT 2022. Contains 354835 sequences. (Running on oeis4.)