Number of (n+2)X3 binary arrays avoiding patterns 000 and 011 in rows, columns and nw-to-se diagonals.

A202770

Number of (n+2)X3 binary arrays avoiding patterns 000 and 011 in rows, columns and nw-to-se diagonals.

Terms

    a(0) =86a(1) =201a(2) =424a(3) =833a(4) =1602a(5) =2981a(6) =5467a(7) =9909a(8) =17780a(9) =31747a(10) =56392a(11) =99857a(12) =176434a(13) =311122a(14) =548014a(15) =964321a(16) =1695678a(17) =2980281a(18) =5235910a(19) =9196219a(20) =16148555a(21) =28352217a(22) =49772670a(23) =87368483a(24) =153352196a(25) =269155679a(26) =472389610a(27) =829058262a(28) =1454991124

External references