a(n) = (15*n^2 + 35*n + 16)*Pochhammer(n, 5) / 6!.

Terms

a(0) =0a(1) =11a(2) =146a(3) =896a(4) =3696a(5) =11886a(6) =32172a(7) =76692a(8) =165792a(9) =331617a(10) =622622a(11) =1109108a(12) =1889888a(13) =3100188a(14) =4920888a(15) =7589208a(16) =11410944a(17) =16774359a(18) =24165834a(19) =34187384a(20) =47576144a(21) =65225930a(22) =88210980a(23) =117811980a(24) =155544480a(25) =203189805a(26) =262828566a(27) =336876876a(28) =428125376a(29) =539781176