A293573 E.g.f.: exp(x/(1 + x + x^2 + x^3 + x^4)).

1, 1, -1, -5, 1, 41, 751, -461, -61375, -114479, 3197791, 51784811, 95861569, -13289759495, -88386566449, 1959369708451, 39596487031681, 144047673616289, -17707296608390465, -244965944457878309, 5109519579305499521, 149507697206554889161

Offset

0,4

Links

Table of n, a(n) for n=0..21.

Formula

E.g.f.: Product_{k>0} exp(x^(5*k-4)) / exp(x^(5*k-3)).

Prog

(PARI) N=66; x='x+O('x^N); Vec(serlaplace(exp(x/(1+x+x^2+x^3+x^4))))
(PARI) N=66; x='x+O('x^N); Vec(serlaplace(prod(k=1, N, exp(x^(5*k-4)-x^(5*k-3)))))

Crossrefs

Cf. A111884, A293571, A293572.

Sequence in context: A039817 A293604 A000321 * A039922 A192353 A255979

Adjacent sequences: A293570 A293571 A293572 * A293574 A293575 A293576

Keyword

sign

Author

Seiichi Manyama, Oct 12 2017

Status

approved