Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

A305914

Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =5a(1) =21a(2) =27a(3) =101a(4) =347a(5) =1129a(6) =4982a(7) =23181a(8) =101615a(9) =481454a(10) =2332962a(11) =11031069a(12) =52713092a(13) =254276678a(14) =1219410066a(15) =5849035794a(16) =28135957701a(17) =135212478429a(18) =649485620674

External references