T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards.
A205181
T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =256a(1) =2504a(2) =2504a(3) =23244a(4) =61320a(5) =23244a(6) =177050a(7) =1373400a(8) =1373400a(9) =177050a(10) =1284356a(11) =24657580a(12) =73775908a(13) =24657580a(14) =1284356a(15) =8458978a(16) =431119786a(17) =2902004018a(18) =2902004018a(19) =431119786a(20) =8458978a(21) =53679123a(22) =6934715463a(23) =109885347688
External references
- oeis: A205181