A343428 G.f.: 1 + 1!*x/(1 + 2!*x/(1 + 3!*x/(1 + 4!*x/(1 + 5!*x/(1 + ...))))).

1, 1, -2, 16, -416, 47104, -31623680, 151868796928, -5929687248674816, 2103645975156790263808, -7506342628191723555983065088, 295743482602620866090259230372134912, -140189608695401234244797733914829257462251520, 865523452956329002149153403380412177220307414830546944

Offset: 0

Author

Seiichi Manyama, Apr 15 2021

Keywords

• sign

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..43

Crossrefs

Cf. A000698, A285380, A343427.

Programs

PARI

a(n) = my(A=1+O(x)); for(i=1, n, A=1+(n-i+1)!*x/A); polcoef(A, n);

Formula

G.f.: 1/(Sum_{k>=0} A285380(k) * (-x)^k).