T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.
A207300
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.
Terms
- a(0) =256a(1) =2338a(2) =2338a(3) =15040a(4) =93991a(5) =15040a(6) =84899a(7) =2019514a(8) =2019514a(9) =84899a(10) =456043a(11) =33860323a(12) =158967751a(13) =33860323a(14) =456043a(15) =2470216a(16) =521236935a(17) =8967460486a(18) =8967460486a(19) =521236935a(20) =2470216a(21) =13615376a(22) =8125554503a(23) =380160979265
External references
- oeis: A207300