T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.

A253326

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.

Terms

    a(0) =16a(1) =44a(2) =44a(3) =121a(4) =126a(5) =121a(6) =286a(7) =373a(8) =377a(9) =286a(10) =676a(11) =1026a(12) =1217a(13) =848a(14) =676a(15) =1482a(16) =2797a(17) =3787a(18) =2538a(19) =2042a(20) =1482a(21) =3249a(22) =6936a(23) =11506a(24) =7744a(25) =6190a(26) =4218a(27) =3249a(28) =6840a(29) =17197

External references