T(n,k) = number of (n+1) X (k+1) 0..2 arrays with equal numbers of 2 X 2 subblocks with sum over 4 and with sum under 4.
A183748
T(n,k) = number of (n+1) X (k+1) 0..2 arrays with equal numbers of 2 X 2 subblocks with sum over 4 and with sum under 4.
Terms
- a(0) =19a(1) =147a(2) =147a(3) =1041a(4) =2553a(5) =1041a(6) =10231a(7) =55857a(8) =55857a(9) =10231a(10) =76355a(11) =1389521a(12) =3631179a(13) =1389521a(14) =76355a(15) =639129a(16) =33587307a(17) =263234281a(18) =263234281a(19) =33587307a(20) =639129a(21) =5262685a(22) =829488619a(23) =19216153673a(24) =55212617129a(25) =19216153673a(26) =829488619a(27) =5262685
External references
- oeis: A183748