Number of (4+1) X (n+1) 0..2 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.
A250902
Number of (4+1) X (n+1) 0..2 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) =1333a(1) =4750a(2) =14196a(3) =39003a(4) =102789a(5) =265546a(6) =680504a(7) =1742387a(8) =4479925a(9) =11612686a(10) =30445732a(11) =80928947a(12) =218431629a(13) =598934874a(14) =1667663960a(15) =4709666459a(16) =13467918413a(17) =38924144238a(18) =113481270292a(19) =333163706923a(20) =983467807413
External references
- oeis: A250902