Number of (1+1) X (n+1) 0..3 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.
A250677
Number of (1+1) X (n+1) 0..3 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) =104a(1) =669a(2) =3927a(3) =22119a(4) =120233a(5) =637948a(6) =3321772a(7) =17052553a(8) =86573591a(9) =435717423a(10) =2177845221a(11) =10825761528a(12) =53576004128a(13) =264200974309
External references
- oeis: A250677