Number of (n+1) X 3 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.
A204645
Number of (n+1) X 3 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) =16a(1) =32a(2) =56a(3) =90a(4) =137a(5) =200a(6) =283a(7) =390a(8) =526a(9) =696a(10) =906a(11) =1162a(12) =1471a(13) =1840a(14) =2277a(15) =2790a(16) =3388a(17) =4080a(18) =4876a(19) =5786a(20) =6821a(21) =7992a(22) =9311a(23) =10790a(24) =12442a(25) =14280a(26) =16318a(27) =18570a(28) =21051a(29) =23776
External references
- oeis: A204645