Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

A305084

Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =14a(2) =22a(3) =34a(4) =182a(5) =438a(6) =920a(7) =3431a(8) =9510a(9) =23203a(10) =71980a(11) =207896a(12) =548764a(13) =1589150a(14) =4583355a(15) =12584286a(16) =35647621a(17) =101918420a(18) =284776152a(19) =802405630a(20) =2278924650a(21) =6411920377a(22) =18060406770a(23) =51105607469a(24) =144130596082a(25) =406239439148

External references