Number of (n+1) X (5+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.
A250809
Number of (n+1) X (5+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.
Terms
- a(0) =784a(1) =3097a(2) =11116a(3) =37333a(4) =120304a(5) =377857a(6) =1167796a(7) =3572173a(8) =10854424a(9) =32839417a(10) =99070876a(11) =298318213a(12) =897166144a(13) =2695921777a(14) =8096612356a(15) =24307531453a(16) =72957983464a(17) =218944728937a(18) =656975744236
External references
- oeis: A250809