a(n) = 1 + 2*n^2 + 3*n^3 + 4*n^4.

Terms

a(0) =1a(1) =10a(2) =97a(3) =424a(4) =1249a(5) =2926a(6) =5905a(7) =10732a(8) =18049a(9) =28594a(10) =43201a(11) =62800a(12) =88417a(13) =121174a(14) =162289a(15) =213076a(16) =274945a(17) =349402a(18) =438049a(19) =542584a(20) =664801a(21) =806590a(22) =969937a(23) =1156924a(24) =1369729a(25) =1610626a(26) =1881985a(27) =2186272a(28) =2526049a(29) =2903974