Number of n X 3 0..1 arrays with every element equal to 1, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

A299523

Number of n X 3 0..1 arrays with every element equal to 1, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =4a(2) =1a(3) =12a(4) =35a(5) =60a(6) =269a(7) =873a(8) =1985a(9) =7571a(10) =24138a(11) =65389a(12) =225530a(13) =714174a(14) =2097771a(15) =6892581a(16) =21742964a(17) =66279272a(18) =212788613a(19) =670024373a(20) =2077242857a(21) =6596234246a(22) =20753371856a(23) =64838337595a(24) =204829582459a(25) =644229872136

External references