Number of (n+2) X 3 binary arrays avoiding patterns 000 and 101 in rows, columns and nw-to-se diagonals.

A202525

Number of (n+2) X 3 binary arrays avoiding patterns 000 and 101 in rows, columns and nw-to-se diagonals.

Terms

    a(0) =86a(1) =198a(2) =417a(3) =890a(4) =1940a(5) =4184a(6) =8994a(7) =19420a(8) =41918a(9) =90355a(10) =194874a(11) =420410a(12) =906707a(13) =1955533a(14) =4217976a(15) =9097605a(16) =19621946a(17) =42321918a(18) =91282656a(19) =196883149a(20) =424648818a(21) =915907828a(22) =1975482000a(23) =4260832180a(24) =9190009191a(25) =19821539577a(26) =42752232438

External references