Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

A316118

Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =7a(2) =13a(3) =23a(4) =47a(5) =144a(6) =391a(7) =1118a(8) =3330a(9) =10129a(10) =30953a(11) =95037a(12) =293116a(13) =905585a(14) =2799778a(15) =8662028a(16) =26809369a(17) =82990751a(18) =256933941a(19) =795508636a(20) =2463117879a(21) =7626665518a(22) =23615103348a(23) =73122045417a(24) =226416803035a(25) =701083972797

External references