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

A298585

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

Terms

    a(0) =1a(1) =2a(2) =5a(3) =4a(4) =13a(5) =31a(6) =83a(7) =262a(8) =819a(9) =2690a(10) =8887a(11) =29665a(12) =99320a(13) =333338a(14) =1119938a(15) =3764541a(16) =12659539a(17) =42574893a(18) =143200453a(19) =481671189a(20) =1620186045a(21) =5449885061a(22) =18332044657a(23) =61664686672a(24) =207425872879a(25) =697733534147

External references