Number of (3+1)X(n+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise.
A235423
Number of (3+1)X(n+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise.
Terms
- a(0) =2304a(1) =60231a(2) =1607343a(3) =33361964a(4) =681329430a(5) =11371435264a(6) =191226875455
External references
- oeis: A235423