Number of nX4 0..1 arrays with every element equal to 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

A298255

Number of nX4 0..1 arrays with every element equal to 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =2a(2) =4a(3) =11a(4) =23a(5) =72a(6) =201a(7) =597a(8) =1705a(9) =5141a(10) =15305a(11) =45558a(12) =136366a(13) =408269a(14) =1222895a(15) =3664732a(16) =10990002a(17) =32961810a(18) =98879571a(19) =296674303a(20) =890217834a(21) =2671430941a(22) =8017066909a(23) =24060553805a(24) =72211714389a(25) =216729874503a(26) =650484059608

External references