Number of (3+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.
A250771
Number of (3+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.
Terms
- a(0) =36a(1) =66a(2) =114a(3) =196a(4) =344a(5) =622a(6) =1158a(7) =2208a(8) =4284a(9) =8410a(10) =16634a(11) =33052a(12) =65856a(13) =131430a(14) =262542a(15) =524728a(16) =1049060a(17) =2097682a(18) =4194882a(19) =8389236a(20) =16777896a(21) =33555166a(22) =67109654a(23) =134218576a(24) =268436364a(25) =536871882a(26) =1073742858a(27) =2147484748a(28) =4294968464
External references
- oeis: A250771