Number of (n+1)X(1+1) 0..2 arrays with nondecreasing min(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.
A250447
Number of (n+1)X(1+1) 0..2 arrays with nondecreasing min(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) =44a(1) =217a(2) =1000a(3) =4535a(4) =20242a(5) =89677a(6) =395240a(7) =1736779a(8) =7617286a(9) =33369545a(10) =146077396a(11) =639173575a(12) =2795963426a(13) =12228336613a(14) =53475556816a(15) =233837032739
External references
- oeis: A250447