Number of (n+1)X(1+1) 0..3 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise.
A235518
Number of (n+1)X(1+1) 0..3 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise.
Terms
- a(0) =256a(1) =2272a(2) =20164a(3) =131208a(4) =853776a(5) =4548852a(6) =24235929a(7) =112067172a(8) =518199696a(9) =2154384960a(10) =8956729600a(11) =34271036800a(12) =131130894400a(13) =469396239400
External references
- oeis: A235518