Number of (6+1)X(n+1) 0..1 arrays with nondecreasing min(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.

A250803

Number of (6+1)X(n+1) 0..1 arrays with nondecreasing min(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) =816a(1) =3646a(2) =12706a(3) =38676a(4) =105954a(5) =270598a(6) =653880a(7) =1517666a(8) =3411886a(9) =7486456a(10) =16113534a(11) =34166562a(12) =71587660a(13) =148595086a(14) =306145338a(15) =627018812a(16) =1278150458a(17) =2595669838a(18) =5255451696a(19) =10615144698a(20) =21399536646a(21) =43073623696a(22) =86592277446

External references