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

Terms

a(0) =812a(1) =3335a(2) =7540a(3) =13427a(4) =20996a(5) =30247a(6) =41180a(7) =53795a(8) =68092a(9) =84071a(10) =101732a(11) =121075a(12) =142100a(13) =164807a(14) =189196a(15) =215267a(16) =243020a(17) =272455a(18) =303572a(19) =336371a(20) =370852a(21) =407015a(22) =444860a(23) =484387a(24) =525596a(25) =568487a(26) =613060a(27) =659315a(28) =707252a(29) =756871