Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

A317120

Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =23a(2) =82a(3) =302a(4) =1164a(5) =4561a(6) =17966a(7) =70913a(8) =280153a(9) =1107258a(10) =4377083a(11) =17304434a(12) =68414244a(13) =270485001a(14) =1069407613a(15) =4228096809a(16) =16716574533a(17) =66092165685a(18) =261308072698

External references