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.
A250763
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) =34a(2) =114a(3) =350a(4) =996a(5) =2666a(6) =6810a(7) =16798a(8) =40368a(9) =95114a(10) =220710a(11) =505982a(12) =1148556a(13) =2585674a(14) =5779890a(15) =12840638a(16) =28371816a(17) =62384042
External references
- oeis: A250763