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 A155811 a(n) = [x^(n+1)*y] exp( Sum_{m>=1} (2^m + y)^m * x^m/m ), in which the coefficients of x^n*y^k are integer for n>=k>=0. 1
 1, 6, 82, 4452, 1074934, 1082704500, 4411700155252, 72146891831948808, 4724816968764733073446, 1238218148763614236043117508, 1298203457233136135837147642852956 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..10. FORMULA Column 1 of triangle A155810. PROG (PARI) {a(n)=polcoeff(polcoeff(exp(sum(m=1, n+1, (2^m+y)^m*x^m/m)+x*O(x^(n+1))), n+1, x), 1, y)} CROSSREFS Cf. A155810. Sequence in context: A251584 A068253 A188806 * A239170 A112462 A283198 Adjacent sequences: A155808 A155809 A155810 * A155812 A155813 A155814 KEYWORD nonn AUTHOR Paul D. Hanna, Feb 04 2009 STATUS approved

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Last modified December 2 20:08 EST 2023. Contains 367526 sequences. (Running on oeis4.)