Number of (n+1) X (7+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.
A250876
Number of (n+1) X (7+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.
Terms
- a(0) =5518a(1) =27686a(2) =131982a(3) =600070a(4) =2633198a(5) =11264166a(6) =47315662a(7) =196169030a(8) =805653678a(9) =3286063846a(10) =13335635342a(11) =53918745990a(12) =217407726958a(13) =874837394726
External references
- oeis: A250876