Number of n X 4 0..1 arrays with every element unequal to 0, 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.

A304475

Number of n X 4 0..1 arrays with every element unequal to 0, 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =24a(2) =37a(3) =110a(4) =297a(5) =869a(6) =2325a(7) =6379a(8) =17568a(9) =48401a(10) =132571a(11) =364655a(12) =1002589a(13) =2754738a(14) =7567524a(15) =20801769a(16) =57166345a(17) =157087321a(18) =431686614a(19) =1186366477a(20) =3260212654a(21) =8959296665a(22) =24621148350a(23) =67661598847a(24) =185940093307a(25) =510981495243

External references