a(n) = 961*n^2 - 2*n.

Terms

a(0) =959a(1) =3840a(2) =8643a(3) =15368a(4) =24015a(5) =34584a(6) =47075a(7) =61488a(8) =77823a(9) =96080a(10) =116259a(11) =138360a(12) =162383a(13) =188328a(14) =216195a(15) =245984a(16) =277695a(17) =311328a(18) =346883a(19) =384360a(20) =423759a(21) =465080a(22) =508323a(23) =553488a(24) =600575a(25) =649584a(26) =700515a(27) =753368a(28) =808143a(29) =864840