Number of (5+1) X (n+1) 0..1 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.
A250734
Number of (5+1) X (n+1) 0..1 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) =99a(1) =230a(2) =600a(3) =1500a(4) =3605a(5) =8514a(6) =19887a(7) =46315a(8) =107565a(9) =249853a(10) =579962a(11) =1346953a(12) =3127694a(13) =7265717a(14) =16877299a(15) =39213972a(16) =91109305a(17) =211714501a(18) =491957956a(19) =1143254321a(20) =2656749170a(21) =6174181500a(22) =14348397804a(23) =33345661179a(24) =77494714919
External references
- oeis: A250734