OFFSET
0,2
COMMENTS
Triangle A152800 gives a q-analog of the Euler numbers.
PROG
(PARI) {a(n)=polcoeff(polcoeff(1/sum(m=0, n+1, (-1)^m*x^(2*m)/prod(j=1, 2*m, (q^j-1)/(q-1))+x*O(x^(2*n+2))), 2*n+2, x)*prod(j=1, 2*n+2, (q^j-1)/(q-1)), 2*n, q)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 26 2008
STATUS
approved