T(n,k)=Number of nXk 0..7 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..7 introduced in row major order.

A209527

T(n,k)=Number of nXk 0..7 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..7 introduced in row major order.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =5a(4) =6a(5) =5a(6) =15a(7) =57a(8) =57a(9) =15a(10) =52a(11) =700a(12) =2027a(13) =700a(14) =52a(15) =203a(16) =10677a(17) =107693a(18) =107693a(19) =10677a(20) =203a(21) =877a(22) =193676a(23) =7700397a(24) =27323948a(25) =7700397a(26) =193676a(27) =877a(28) =4140a(29) =4054358

External references