Number of nX7 0..1 arrays with every element unequal to 0, 1, 3 or 6 king-move adjacent elements, with upper left element zero.

A304132

Number of nX7 0..1 arrays with every element unequal to 0, 1, 3 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =21a(1) =103a(2) =89a(3) =244a(4) =582a(5) =1321a(6) =2945a(7) =6333a(8) =13315a(9) =28932a(10) =63006a(11) =134021a(12) =284831a(13) =607277a(14) =1291893a(15) =2755806a(16) =5876374a(17) =12482965a(18) =26539285a(19) =56520687a(20) =120314557a(21) =256086726a(22) =545101754a(23) =1160070321a(24) =2469739659a(25) =5259410891a(26) =11198740071a(27) =23845751230

External references