a(0) = 1; thereafter a(n) = 10*n^2 - 5*n + 2.

Terms

a(0) =1a(1) =7a(2) =32a(3) =77a(4) =142a(5) =227a(6) =332a(7) =457a(8) =602a(9) =767a(10) =952a(11) =1157a(12) =1382a(13) =1627a(14) =1892a(15) =2177a(16) =2482a(17) =2807a(18) =3152a(19) =3517a(20) =3902a(21) =4307a(22) =4732a(23) =5177a(24) =5642a(25) =6127a(26) =6632a(27) =7157a(28) =7702a(29) =8267