Number of (n+1)X(7+1) 0..1 arrays with nondecreasing 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.
A250728
Number of (n+1)X(7+1) 0..1 arrays with nondecreasing 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) =1302a(1) =3173a(2) =6257a(3) =11377a(4) =19887a(5) =34069a(6) =57397a(7) =95231a(8) =155263a(9) =248537a(10) =390263a(11) =601256a(12) =909242a(13) =1350837a(14) =1973466a(15) =2838027a(16) =4021571a(17) =5620807a(18) =7755707a(19) =10574024a(20) =14256002a(21) =19020095a(22) =25128978a(23) =32896671a(24) =42696063a(25) =54967661a(26) =70228855a(27) =89084528
External references
- oeis: A250728