OFFSET
0,3
COMMENTS
A136590 is the triangle of trinomial logarithmic coefficients.
PROG
(PARI) a(n)=sum(k=0, n, n!/k!*abs(polcoeff(log(1+x+x^2 +x*O(x^n))^k, n)))
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Jan 10 2008
STATUS
approved