Number of (n+1)X(5+1) 0..1 arrays with nondecreasing max(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.
A250580
Number of (n+1)X(5+1) 0..1 arrays with nondecreasing max(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) =282a(1) =758a(2) =1779a(3) =4013a(4) =8914a(5) =19806a(6) =44104a(7) =98902a(8) =222987a(9) =506145a(10) =1154234a(11) =2644847a(12) =6079586a(13) =14016928a(14) =32378102a(15) =74921678a(16) =173549426a(17) =402401946a(18) =933565065a(19) =2166994001a(20) =5031542164a(21) =11686029668a(22) =27145660442a(23) =63066542163a(24) =146531950506
External references
- oeis: A250580