Number of nX4 0..1 arrays with every element unequal to 0, 1, 2 or 5 king-move adjacent elements, with upper left element zero.

A303957

Number of nX4 0..1 arrays with every element unequal to 0, 1, 2 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =9a(2) =22a(3) =61a(4) =159a(5) =452a(6) =1228a(7) =3334a(8) =9109a(9) =24981a(10) =68361a(11) =186938a(12) =511360a(13) =1399227a(14) =3828333a(15) =10473733a(16) =28654819a(17) =78397711a(18) =214490589a(19) =586827986a(20) =1605511103a(21) =4392547097a(22) =12017651474a(23) =32879305320a(24) =89955066866a(25) =246109662001

External references