

A152802


a(n) = A152800(n+2,2n+1) for n>=0.


5



1, 3, 10, 41, 172, 749, 3332, 15041, 68640, 315840, 1462798, 6810588, 31846811, 149459541, 703592472, 3321019270, 15711717162, 74482623635, 353723268817, 1682536854931, 8014676326925, 38226681972410, 182538225520073
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OFFSET

0,2


COMMENTS

Triangle A152800 gives a qanalog of the Euler numbers.


LINKS

Table of n, a(n) for n=0..22.
M. M. Graev, Einstein equations for invariant metrics on flag spaces and their Newton polytopes, Transactions of the Moscow Mathematical Society, 2014, pp. 1368. Original publication: Trudy Moskovskogo Matematicheskogo Obshchestva, tom 75 (2014), vypusk 1.


PROG

(PARI) {a(n)=polcoeff(polcoeff(1/sum(m=0, n+2, (1)^m*x^(2*m)/prod(j=1, 2*m, (q^j1)/(q1))+x*O(x^(2*n+4))), 2*n+4, x)*prod(j=1, 2*n+4, (q^j1)/(q1)), 2*n+1, q)}


CROSSREFS

Cf. A152800; A152801.
Sequence in context: A151080 A153474 A151081 * A260789 A151082 A151083
Adjacent sequences: A152799 A152800 A152801 * A152803 A152804 A152805


KEYWORD

nonn


AUTHOR

Paul D. Hanna, Dec 26 2008


STATUS

approved



