a(n) = 4802*n^2 - 196*n + 1.

Terms

a(0) =4607a(1) =18817a(2) =42631a(3) =76049a(4) =119071a(5) =171697a(6) =233927a(7) =305761a(8) =387199a(9) =478241a(10) =578887a(11) =689137a(12) =808991a(13) =938449a(14) =1077511a(15) =1226177a(16) =1384447a(17) =1552321a(18) =1729799a(19) =1916881a(20) =2113567a(21) =2319857a(22) =2535751a(23) =2761249a(24) =2996351a(25) =3241057a(26) =3495367