a(n) = n^4 + 4*n^3 + 12*n^2 + 24*n + 24.

Terms

a(0) =24a(1) =65a(2) =168a(3) =393a(4) =824a(5) =1569a(6) =2760a(7) =4553a(8) =7128a(9) =10689a(10) =15464a(11) =21705a(12) =29688a(13) =39713a(14) =52104a(15) =67209a(16) =85400a(17) =107073a(18) =132648a(19) =162569a(20) =197304a(21) =237345a(22) =283208a(23) =335433a(24) =394584a(25) =461249a(26) =536040a(27) =619593a(28) =712568a(29) =815649