Number of (2+1)X(n+1) 0..2 arrays with nondecreasing min(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.
A250996
Number of (2+1)X(n+1) 0..2 arrays with nondecreasing min(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) =158a(1) =872a(2) =4007a(3) =16993a(4) =67409a(5) =255502a(6) =934786a(7) =3328627a(8) =11598747a(9) =39713993a(10) =134023188a(11) =446828435a(12) =1474417169a(13) =4822285168a(14) =15651307633a(15) =50458460322a(16) =161715555989a(17) =515580776806
External references
- oeis: A250996