A343468 G.f.: 1 + 1*x/(1 + 2*x^2/(1 + 3*x^3/(1 + 4*x^4/(1 + 5*x^5/(1 + ...))))).

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

Links

Table of n, a(n) for n=0..42.

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

Cf. A000698, A003823, A088357, A343472, A343473.

Sequence in context: A196877 A098123 A066659 * A287846 A085623 A317965

Adjacent sequences: A343465 A343466 A343467 * A343469 A343470 A343471

Keyword

sign

Author

Seiichi Manyama, Apr 16 2021

Status

approved