T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.

A205836

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.

Terms

    a(0) =30a(1) =111a(2) =111a(3) =423a(4) =630a(5) =423a(6) =1611a(7) =3642a(8) =3642a(9) =1611a(10) =6132a(11) =21126a(12) =32106a(13) =21126a(14) =6132a(15) =23340a(16) =122526a(17) =284910a(18) =284910a(19) =122526a(20) =23340a(21) =88839a(22) =710526a(23) =2531223a(24) =3875376a(25) =2531223a(26) =710526a(27) =88839a(28) =338148a(29) =4120230

External references