Number of (1+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.
A250995
Number of (1+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) =40a(1) =169a(2) =646a(3) =2359a(4) =8298a(5) =28450a(6) =95628a(7) =316568a(8) =1035294a(9) =3352547a(10) =10768211a(11) =34351193a(12) =108947285a(13) =343813542a(14) =1080310949a(15) =3381653079a(16) =10550153029a(17) =32817177900a(18) =101810982442a(19) =315106120063a(20) =973171192417
External references
- oeis: A250995