A163700 Number of n X 7 binary arrays with all 1s connected, a path of 1s from top row to lower right corner, and no 1 having more than two 1s adjacent.

7, 112, 1064, 8515, 62079, 405512, 2583720, 16613952, 106818182, 674236041, 4156106894, 25143683018, 150310961615, 891366081923, 5248766190760, 30688652038554, 178202157138331, 1028377676249466, 5902549812507955, 33717325595687972, 191774058061012870, 1086422007271754216

Offset

1,1

Links

Andrew Howroyd, Table of n, a(n) for n = 1..200

Crossrefs

Column 7 of A391823.

Sequence in context: A260027 A061233 A117795 * A094219 A212702 A217223

Adjacent sequences: A163697 A163698 A163699 * A163701 A163702 A163703

Keyword

nonn

Author

R. H. Hardin, Aug 03 2009

Extensions

a(9) onward from Andrew Howroyd, Dec 23 2025

Status

approved