Number of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nonincreasing x(i,j)-x(i-1,j) in the j direction.
A250738
Number of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nonincreasing x(i,j)-x(i-1,j) in the j direction.
Terms
- a(0) =34a(1) =38a(2) =46a(3) =62a(4) =94a(5) =158a(6) =286a(7) =542a(8) =1054a(9) =2078a(10) =4126a(11) =8222a(12) =16414a(13) =32798a(14) =65566a(15) =131102a(16) =262174a(17) =524318a(18) =1048606a(19) =2097182a(20) =4194334a(21) =8388638a(22) =16777246a(23) =33554462a(24) =67108894a(25) =134217758a(26) =268435486a(27) =536870942a(28) =1073741854a(29) =2147483678
External references
- oeis: A250738