Number of (n+1)X(n+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.
A250776
Number of (n+1)X(n+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.
Terms
- a(0) =9a(1) =46a(2) =230a(3) =1152a(4) =5688a(5) =27986a(6) =137082a(7) =670608a(8) =3275574a(9) =15987988a(10) =77980390a(11) =380145754a(12) =1852275976a(13) =9021572492a(14) =43923360572a(15) =213777365336
External references
- oeis: A250776