OFFSET
1,2
COMMENTS
Reversion of g.f. for odd prime numbers together with 1.
LINKS
Eric Weisstein's World of Mathematics, Series Reversion
MATHEMATICA
nmax = 24; A[_] = 0; Do[A[x_] = x - Sum[Prime[k] A[x]^k, {k, 2, nmax}] + O[x]^(nmax + 1) // Normal, nmax + 1]; CoefficientList[A[x], x] // Rest
nmax = 24; CoefficientList[InverseSeries[Series[x + Sum[Prime[k] x^k, {k, 2, nmax}], {x, 0, nmax}], x], x] // Rest
CROSSREFS
KEYWORD
sign
AUTHOR
Ilya Gutkovskiy, Sep 25 2023
STATUS
approved