A343427 G.f.: 1 + 1^1*x/(1 + 2^2*x/(1 + 3^3*x/(1 + 4^4*x/(1 + 5^5*x/(1 + ...))))).

1, 1, -4, 124, -31492, 95311228, -4353197274628, 3536438210329520764, -58773626061322570140840196, 22612364715316383254816814332673916, -224919094679732422549471022558879877877853188, 63900685360824803637692081638626416736937520172676174972

Offset

0,3

Links

Seiichi Manyama, Table of n, a(n) for n = 0..37

Formula

G.f.: 1/(Sum_{k>=0} A307084(k) * (-x)^k).

Prog

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

Crossrefs

Cf. A000698, A307084, A343428.

Sequence in context: A197610 A090082 A243010 * A209040 A068891 A337245

Adjacent sequences: A343424 A343425 A343426 * A343428 A343429 A343430

Keyword

sign

Author

Seiichi Manyama, Apr 15 2021

Status

approved