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A343468
G.f.: 1 + 1*x/(1 + 2*x^2/(1 + 3*x^3/(1 + 4*x^4/(1 + 5*x^5/(1 + ...))))).
0
1, 1, 0, -2, 0, 4, 6, -8, -24, -2, 48, 76, -42, -224, -144, 406, 744, -332, -2154, -1400, 4320, 7702, -2016, -21428, -17802, 34216, 76152, -5210, -195816, -181916, 300510, 772432, 53136, -1851770, -2055360, 2388772, 7515246, 1755880, -16586616, -21354266, 19195248, 72641884, 27527118
OFFSET
0,4
PROG
(PARI) a(n) = my(A=1+O(x)); for(i=1, n, A=1+(n-i+1)*x^(n-i+1)/A); polcoef(A, n);
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Apr 16 2021
STATUS
approved