Numerator of 3 * H(n,3,2), a generalized harmonic number. See A075135.

A074597

Numerator of 3 * H(n,3,2), a generalized harmonic number. See A075135.

Terms

    a(0) =3a(1) =21a(2) =99a(3) =1209a(4) =9123a(5) =164331a(6) =34437a(7) =823467a(8) =11066355a(9) =330317679a(10) =1355321733a(11) =990324351a(12) =19205317149a(13) =802205873349a(14) =815985479709

External references