Number of (n+1)X(2+1) 0..3 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise.
A235519
Number of (n+1)X(2+1) 0..3 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise.
Terms
- a(0) =2272a(1) =61080a(2) =1649707a(3) =32516127a(4) =636820654a(5) =9861273365a(6) =152479393753
External references
- oeis: A235519