a(n) = 529*n^2 - 746*n + 263.

Terms

a(0) =46a(1) =887a(2) =2786a(3) =5743a(4) =9758a(5) =14831a(6) =20962a(7) =28151a(8) =36398a(9) =45703a(10) =56066a(11) =67487a(12) =79966a(13) =93503a(14) =108098a(15) =123751a(16) =140462a(17) =158231a(18) =177058a(19) =196943a(20) =217886a(21) =239887a(22) =262946a(23) =287063a(24) =312238a(25) =338471a(26) =365762a(27) =394111a(28) =423518a(29) =453983