a(n) = 13*n^2 + 10*n + 1.

Terms

a(0) =1a(1) =24a(2) =73a(3) =148a(4) =249a(5) =376a(6) =529a(7) =708a(8) =913a(9) =1144a(10) =1401a(11) =1684a(12) =1993a(13) =2328a(14) =2689a(15) =3076a(16) =3489a(17) =3928a(18) =4393a(19) =4884a(20) =5401a(21) =5944a(22) =6513a(23) =7108a(24) =7729a(25) =8376a(26) =9049a(27) =9748a(28) =10473a(29) =11224