a(n) = 841*n^2 + 29.

Terms

a(0) =29a(1) =870a(2) =3393a(3) =7598a(4) =13485a(5) =21054a(6) =30305a(7) =41238a(8) =53853a(9) =68150a(10) =84129a(11) =101790a(12) =121133a(13) =142158a(14) =164865a(15) =189254a(16) =215325a(17) =243078a(18) =272513a(19) =303630a(20) =336429a(21) =370910a(22) =407073a(23) =444918a(24) =484445a(25) =525654a(26) =568545a(27) =613118a(28) =659373a(29) =707310