(Terms in A014762)/4.

Terms

a(0) =4a(1) =25a(2) =9a(3) =784a(4) =196a(5) =16a(6) =3969a(7) =1764a(8) =324a(9) =11025a(10) =3600a(11) =25a(12) =53361a(13) =27225a(14) =156816a(15) =12100a(16) =1089a(17) =36a(18) =736164a(19) =20449a(20) =1521a(21) =1002001a(22) =33124a(23) =49a(24) =32718400a(25) =16032016a(26) =4769856a(27) =828100a(28) =78400a(29) =3600