Number of (n+1)X4 0..1 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.
A204795
Number of (n+1)X4 0..1 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.
Terms
- a(0) =125a(1) =1001a(2) =6537a(3) =42214a(4) =270148a(5) =1729515a(6) =11096511a(7) =71369791a(8) =459554519a(9) =2960897995a(10) =19082285695a(11) =122998524851a(12) =792865245671
External references
- oeis: A204795