OFFSET
0,3
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..370
FORMULA
a(n) ~ n^(n-1). - Vaclav Kotesovec, Nov 06 2014
EXAMPLE
G.f.: A(x) = 1 + x + 2*x^2 + 11*x^3 + 71*x^4 + 705*x^5 +...
A(x) = (1 + x) *(1 + 4*x^2)^(1/2) *(1 + 27*x^3)^(1/3) *(1 + 256*x^4)^(1/4) *...
PROG
(PARI) {a(n)=if(n<0, 0, polcoeff(prod(k=1, n, (1+k^k*x^k+x*O(x^n))^(1/k)), n))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Mar 19 2011
STATUS
approved