T(n,k)=Number of (n+1)X(k+1) 0..2 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.
A203728
T(n,k)=Number of (n+1)X(k+1) 0..2 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) =32a(1) =113a(2) =113a(3) =326a(4) =480a(5) =326a(6) =888a(7) =1632a(8) =1632a(9) =888a(10) =2278a(11) =4737a(12) =6249a(13) =4737a(14) =2278a(15) =5653a(16) =12470a(17) =20290a(18) =20290a(19) =12470a(20) =5653a(21) =13665a(22) =30335a(23) =58048a(24) =72777a(25) =58048a(26) =30335a(27) =13665a(28) =32440a(29) =69612
External references
- oeis: A203728