T(n,k) = Number of (n+2) X (k+2) 0..4 arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.
A186579
T(n,k) = Number of (n+2) X (k+2) 0..4 arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.
Terms
- a(0) =1953125a(1) =6266a(2) =6266a(3) =86439a(4) =845a(5) =86439a(6) =214452a(7) =2799a(8) =2799a(9) =214452a(10) =572145a(11) =23629a(12) =23197a(13) =23629a(14) =572145a(15) =1055951a(16) =52923a(17) =79371a(18) =79371a(19) =52923a(20) =1055951a(21) =1597074a(22) =69181a(23) =115469a(24) =441869a(25) =115469a(26) =69181a(27) =1597074a(28) =1819733a(29) =79441
External references
- oeis: A186579