Number of (n+1) X 2 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.
A204644
Number of (n+1) X 2 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) =16a(2) =28a(3) =48a(4) =80a(5) =132a(6) =216a(7) =352a(8) =572a(9) =928a(10) =1504a(11) =2436a(12) =3944a(13) =6384a(14) =10332a(15) =16720a(16) =27056a(17) =43780a(18) =70840a(19) =114624a(20) =185468a(21) =300096a(22) =485568a(23) =785668a(24) =1271240a(25) =2056912a(26) =3328156a(27) =5385072a(28) =8713232a(29) =14098308
External references
- oeis: A204644