a(n) = 11*n^2.

Terms

a(0) =0a(1) =11a(2) =44a(3) =99a(4) =176a(5) =275a(6) =396a(7) =539a(8) =704a(9) =891a(10) =1100a(11) =1331a(12) =1584a(13) =1859a(14) =2156a(15) =2475a(16) =2816a(17) =3179a(18) =3564a(19) =3971a(20) =4400a(21) =4851a(22) =5324a(23) =5819a(24) =6336a(25) =6875a(26) =7436a(27) =8019a(28) =8624a(29) =9251