a(n) = 103680000*n^2 + 28800*n + 1.

Terms

a(0) =103708801a(1) =414777601a(2) =933206401a(3) =1658995201a(4) =2592144001a(5) =3732652801a(6) =5080521601a(7) =6635750401a(8) =8398339201a(9) =10368288001a(10) =12545596801a(11) =14930265601a(12) =17522294401a(13) =20321683201a(14) =23328432001a(15) =26542540801a(16) =29964009601a(17) =33592838401