Table read by antidiagonals: T(n,k) = number of distinct n X k toroidal 0..4 arrays.

Terms

a(0) =5a(1) =15a(2) =15a(3) =45a(4) =175a(5) =45a(6) =165a(7) =2635a(8) =2635a(9) =165a(10) =629a(11) =49075a(12) =217125a(13) =49075a(14) =629a(15) =2635a(16) =976887a(17) =20346485a(18) =20346485a(19) =976887a(20) =2635a(21) =11165a(22) =20349075a(23) =2034505661a(24) =9536816875a(25) =2034505661a(26) =20349075a(27) =11165a(28) =48915a(29) =435970995