a(n) = (12*n+10)^2.

Terms

a(0) =100a(1) =484a(2) =1156a(3) =2116a(4) =3364a(5) =4900a(6) =6724a(7) =8836a(8) =11236a(9) =13924a(10) =16900a(11) =20164a(12) =23716a(13) =27556a(14) =31684a(15) =36100a(16) =40804a(17) =45796a(18) =51076a(19) =56644a(20) =62500a(21) =68644a(22) =75076a(23) =81796a(24) =88804a(25) =96100a(26) =103684a(27) =111556a(28) =119716