Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

A298657

Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =23a(2) =23a(3) =85a(4) =177a(5) =431a(6) =876a(7) =2137a(8) =5002a(9) =11687a(10) =27591a(11) =64253a(12) =150967a(13) =353682a(14) =830580a(15) =1954490a(16) =4575013a(17) =10742553a(18) =25221766a(19) =59150366a(20) =138829820a(21) =325959550a(22) =764905062a(23) =1795278490a(24) =4214144288a(25) =9890202526a(26) =23212413440a(27) =54483362577

External references