a(n) = 9*n^2 - 237*n + 1927.

Terms

a(0) =1927a(1) =1699a(2) =1489a(3) =1297a(4) =1123a(5) =967a(6) =829a(7) =709a(8) =607a(9) =523a(10) =457a(11) =409a(12) =379a(13) =367a(14) =373a(15) =397a(16) =439a(17) =499a(18) =577a(19) =673a(20) =787a(21) =919a(22) =1069a(23) =1237a(24) =1423a(25) =1627a(26) =1849a(27) =2089a(28) =2347a(29) =2623