Number of (n+1)X(3+1) 0..2 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise.
A235840
Number of (n+1)X(3+1) 0..2 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise.
Terms
- a(0) =2581a(1) =86509a(2) =2919508a(3) =84434218a(4) =2090202044a(5) =44724089619a(6) =849474770590
External references
- oeis: A235840