

A268744


Number of nX2 binary arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.


2



4, 11, 32, 89, 244, 659, 1760, 4657, 12228, 31899, 82752, 213641, 549236, 1406755, 3591232, 9140833, 23204612, 58765099, 148496608, 374496953, 942729588, 2369172915, 5944748064, 14895231121, 37272007108, 93149401019, 232527917312
(list;
graph;
refs;
listen;
history;
text;
internal format)




