a(n) = (11*n + 5)^2.

Terms

a(0) =25a(1) =256a(2) =729a(3) =1444a(4) =2401a(5) =3600a(6) =5041a(7) =6724a(8) =8649a(9) =10816a(10) =13225a(11) =15876a(12) =18769a(13) =21904a(14) =25281a(15) =28900a(16) =32761a(17) =36864a(18) =41209a(19) =45796a(20) =50625a(21) =55696a(22) =61009a(23) =66564a(24) =72361a(25) =78400a(26) =84681a(27) =91204a(28) =97969a(29) =104976