T(n,k)=Number of nXk 0..2 arrays with no occurrence of three equal elements in a row horizontally or vertically, and new values 0..2 introduced in row major order.

A206650

T(n,k)=Number of nXk 0..2 arrays with no occurrence of three equal elements in a row horizontally or vertically, and new values 0..2 introduced in row major order.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =4a(4) =14a(5) =4a(6) =11a(7) =96a(8) =96a(9) =11a(10) =30a(11) =726a(12) =1625a(13) =726a(14) =30a(15) =82a(16) =5400a(17) =30145a(18) =30145a(19) =5400a(20) =82a(21) =224a(22) =40344a(23) =545520a(24) =1414023a(25) =545520a(26) =40344a(27) =224a(28) =612a(29) =301056

External references