Number of nX4 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

A298618

Number of nX4 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =16a(2) =7a(3) =83a(4) =218a(5) =682a(6) =4068a(7) =14719a(8) =58834a(9) =277985a(10) =1204782a(11) =4906664a(12) =21938309a(13) =97174951a(14) =408513090a(15) =1787526305a(16) =7877043169a(17) =33779432182a(18) =146714440581a(19) =642467267688

External references