529n^2 - 312n + 46.

Terms

a(0) =46a(1) =263a(2) =1538a(3) =3871a(4) =7262a(5) =11711a(6) =17218a(7) =23783a(8) =31406a(9) =40087a(10) =49826a(11) =60623a(12) =72478a(13) =85391a(14) =99362a(15) =114391a(16) =130478a(17) =147623a(18) =165826a(19) =185087a(20) =205406a(21) =226783a(22) =249218a(23) =272711a(24) =297262a(25) =322871a(26) =349538a(27) =377263a(28) =406046a(29) =435887