Number of (n+1)X(n+1) 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.
A204643
Number of (n+1)X(n+1) 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.
Terms
- a(0) =8a(1) =32a(2) =104a(3) =330a(4) =1076a(5) =3702a(6) =13314a(7) =49312a(8) =185786a(9) =706912a(10) =2706218a(11) =10403402a(12) =40120324a(13) =155122378a(14) =601086622a(15) =2333614100a(16) =9075145134a(17) =35345275932a(18) =137846543630a(19) =538257892350
External references
- oeis: A204643