A293573 - OEIS

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

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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