OFFSET
0,3
COMMENTS
FORMULA
Convolution 4th power yields A199813.
EXAMPLE
PROG
(PARI) {a(n)=polcoeff(exp(sum(m=1, n, binomial(2*m, m)/2*sum(k=0, m, binomial(m, k)^3)/2*x^m/m)+x*O(x^n)), n)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Nov 11 2011
STATUS
approved