Number of n X 3 0..1 arrays with every element equal to 0, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A300091

Number of n X 3 0..1 arrays with every element equal to 0, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =7a(2) =7a(3) =19a(4) =35a(5) =95a(6) =225a(7) =575a(8) =1563a(9) =4179a(10) =11555a(11) =32259a(12) =90327a(13) =255307a(14) =723255a(15) =2054259a(16) =5847519a(17) =16660707a(18) =47512875a(19) =135574255a(20) =386984391a(21) =1104913059a(22) =3155268051a(23) =9011441543a(24) =25738758919a(25) =73519704603a(26) =210007895555a(27) =599899095903

External references