Numerator of 4 * H(n,4,1), a generalized harmonic number. See A075136.

A074598

Numerator of 4 * H(n,4,1), a generalized harmonic number. See A075136.

Terms

    a(0) =4a(1) =24a(2) =236a(3) =3248a(4) =57556a(5) =416152a(6) =2136452a(7) =63349408a(8) =710302388a(9) =26725332056a(11) =375714836272

External references