Number of nX2 0..1 arrays with every element unequal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

A304143

Number of nX2 0..1 arrays with every element unequal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =7a(2) =14a(3) =33a(4) =70a(5) =157a(6) =346a(7) =769a(8) =1710a(9) =3813a(10) =8514a(11) =19049a(12) =42678a(13) =95757a(14) =215114a(15) =483793a(16) =1089150a(17) =2454197a(18) =5534546a(19) =12490169a(20) =28205510a(21) =63730653a(22) =144073434a(23) =325848609a(24) =737262478a(25) =1668717957a(26) =3778162914a(27) =8556569353a(28) =19383222230a(29) =43918469037

External references