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A343429
G.f.: 1 + 1^2*x/(1 + 2^2*x/(1 + 3^2*x/(1 + 4^2*x/(1 + 5^2*x/(1 + ...))))).
1
1, 1, -4, 52, -1252, 47380, -2589892, 193480948, -18967658404, 2364328255444, -365398042310020, 68588722144816564, -15372942045464127076, 4055513943597589455508, -1243968998818298201100868, 439009056263271003371155060, -176627099114433045240563153188, 80365037678138695452520237597012, -41059325231828016124174743746157316
OFFSET
0,3
LINKS
FORMULA
G.f.: 1/(Sum_{k>=0} A028296(k) * x^k).
PROG
(PARI) a(n) = my(A=1+O(x)); for(i=1, n, A=1+(n-i+1)^2*x/A); polcoef(A, n);
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Apr 15 2021
STATUS
approved