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

Terms

a(0) =0a(1) =841a(2) =3364a(3) =7569a(4) =13456a(5) =21025a(6) =30276a(7) =41209a(8) =53824a(9) =68121a(10) =84100a(11) =101761a(12) =121104a(13) =142129a(14) =164836a(15) =189225a(16) =215296a(17) =243049a(18) =272484a(19) =303601a(20) =336400a(21) =370881a(22) =407044a(23) =444889a(24) =484416a(25) =525625a(26) =568516a(27) =613089a(28) =659344a(29) =707281