OFFSET
1,3
COMMENTS
It is conjectured that this sequence consists entirely of integers.
The g.f. G(x) of A292394 satisfies: [x^n] G( x/G(x)^(n^2) ) = 0 for n>1.
LINKS
Paul D. Hanna, Table of n, a(n) for n = 1..200
PROG
(PARI) {a(n) = my(A=[1, 1]); for(i=2, n, A=concat(A, 0); A[#A] = -Vec(subst(Ser(A), x, x/Ser(A)^((#A-1)^2)))[#A]); A[n+1]/n^2}
for(n=1, 30, print1(a(n), ", "))
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Sep 15 2017
STATUS
approved