Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A317226

Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =49a(2) =150a(3) =490a(4) =2306a(5) =7988a(6) =29512a(7) =118116a(8) =442877a(9) =1674170a(10) =6450674a(11) =24532556a(12) =93346024a(13) =356756541a(14) =1360006032a(15) =5183724970a(16) =19777793656a(17) =75422946136a(18) =287601611955

External references