Number of (n+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.
A250748
Number of (n+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.
Terms
- a(0) =32a(1) =237a(2) =1353a(3) =6663a(4) =29814a(5) =124785a(6) =497471a(7) =1911819a(8) =7141428a(9) =26081157a(10) =93524517a(11) =330341391a(12) =1152105314a(13) =3974940633a(14) =13587035451a(15) =46067386899a(16) =155081690112a(17) =518770438893
External references
- oeis: A250748