Number of (n+1)X(5+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.
A238252
Number of (n+1)X(5+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.
Terms
- a(0) =676a(1) =9991a(2) =284992a(3) =6683137a(4) =171041320a(5) =3320993180a(6) =64353451945a(7) =992794904591
External references
- oeis: A238252