Number of (n+1) X (6+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.
A250781
Number of (n+1) X (6+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) =436a(1) =1106a(2) =2604a(3) =5882a(4) =12950a(5) =27986a(6) =59590a(7) =125334a(8) =260916a(9) =538538a(10) =1103752a(11) =2249266a(12) =4562698a(13) =9222258a(14) =18588322a(15) =37386830a(16) =75076376a(17) =150582730a(18) =301768276a(19) =604371338a(20) =1209885342a(21) =2421317714a(22) =4844708318a(23) =9692167046a(24) =19387949788
External references
- oeis: A250781