Number of nX5 0..1 arrays with every element unequal to 0, 1, 5 or 8 king-move adjacent elements, with upper left element zero.

A304267

Number of nX5 0..1 arrays with every element unequal to 0, 1, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =7a(2) =19a(3) =50a(4) =146a(5) =404a(6) =1074a(7) =2990a(8) =8316a(9) =22660a(10) =62314a(11) =172244a(12) =473150a(13) =1300260a(14) =3582364a(15) =9857308a(16) =27108012a(17) =74607826a(18) =205320218a(19) =564864078a(20) =1554286696a(21) =4277060278a(22) =11768341874a(23) =32381151240a(24) =89101629960a(25) =245170898378

External references