Number of (n+1) X (7+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.

A250782

Number of (n+1) X (7+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) =901a(1) =2326a(2) =5568a(3) =12796a(4) =28692a(5) =63184a(6) =137082a(7) =293588a(8) =621664a(9) =1303276a(10) =2708612a(11) =5587548a(12) =11454008a(13) =23356632a(14) =47422730a(15) =95949660a(16) =193592124a(17) =389742628a(18) =783299900a(19) =1572215204a(20) =3152596828a(21) =6316933760a(22) =12650561098a(23) =25324612868

External references