a(n) = n^3 + n^2 + n.

Terms

a(0) =0a(1) =3a(2) =14a(3) =39a(4) =84a(5) =155a(6) =258a(7) =399a(8) =584a(9) =819a(10) =1110a(11) =1463a(12) =1884a(13) =2379a(14) =2954a(15) =3615a(16) =4368a(17) =5219a(18) =6174a(19) =7239a(20) =8420a(21) =9723a(22) =11154a(23) =12719a(24) =14424a(25) =16275a(26) =18278a(27) =20439a(28) =22764a(29) =25259