a(n) = n^3 + 2*n^2 + 5*n + 11.

Terms

a(0) =11a(1) =19a(2) =37a(3) =71a(4) =127a(5) =211a(6) =329a(7) =487a(8) =691a(9) =947a(10) =1261a(11) =1639a(12) =2087a(13) =2611a(14) =3217a(15) =3911a(16) =4699a(17) =5587a(18) =6581a(19) =7687a(20) =8911a(21) =10259a(22) =11737a(23) =13351a(24) =15107a(25) =17011a(26) =19069a(27) =21287a(28) =23671a(29) =26227