Number of (n+1) X (2+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

A250723

Number of (n+1) X (2+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

Terms

    a(0) =22a(1) =46a(2) =85a(3) =144a(4) =230a(5) =350a(6) =513a(7) =728a(8) =1006a(9) =1358a(10) =1797a(11) =2336a(12) =2990a(13) =3774a(14) =4705a(15) =5800a(16) =7078a(17) =8558a(18) =10261a(19) =12208a(20) =14422a(21) =16926a(22) =19745a(23) =22904a(24) =26430a(25) =30350a(26) =34693a(27) =39488a(28) =44766a(29) =50558

External references