

A323491


Denominators of the sequence c(n) satisfying Sum_{k=0..n} c(k)/(n+k+1) = 0 with c(0)=1.


1



1, 2, 24, 720, 4480, 3628800, 68428800, 118609920, 20922789888000, 6402373705728000, 115852476579840000, 1124000727777607680000, 1909072005333044428800, 1148978521728221184000000, 12195533784468554420060160000, 53050571962438211727261696000000, 7973661725263440308097515520000000
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OFFSET

0,2


LINKS



EXAMPLE

The sequence c(n) begins: 1, 3/2, 5/24, 77/720, 277/4480, 140173/3628800, ...


PROG

(PARI) lista(nn) = {my(c0 = 1, vc = vector(nn)); for (n=1, nn, vc[n] = (2*n+1)*(c0/(n+1) + sum(k=1, n1, vc[k]/(n+k+1))); ); apply(x>numerator(x), concat([c0], vc)); }


CROSSREFS



KEYWORD

nonn,frac


AUTHOR



STATUS

approved



