Number of nX4 0..1 arrays with every element equal to 1, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

A298708

Number of nX4 0..1 arrays with every element equal to 1, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =13a(2) =2a(3) =11a(4) =32a(5) =87a(6) =110a(7) =385a(8) =908a(9) =2760a(10) =6454a(11) =17925a(12) =51777a(13) =141793a(14) =378486a(15) =1095621a(16) =3060776a(17) =8412703a(18) =23884402a(19) =67448745a(20) =187193308a(21) =529617392a(22) =1496665754a(23) =4179115507a(24) =11797048913a(25) =33344442453a(26) =93407406180a(27) =263365123043

External references