Number of (n+1)X(3+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise.
A235543
Number of (n+1)X(3+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise.
Terms
- a(0) =141a(1) =1049a(2) =8711a(3) =61401a(4) =429443a(5) =2704866a(6) =16395328a(7) =93093885a(8) =508540185a(9) =2659704703a(10) =13471014030a(11) =66144806353a(12) =316636996887
External references
- oeis: A235543