A163699 Number of n X 6 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.

6, 66, 469, 2821, 15350, 76848, 381729, 1904232, 9396562, 45298610, 213496766, 990290532, 4544816079, 20681332637, 93358023317, 418215689559, 1860567408169, 8227356825358, 36187514007760, 158406498991376, 690374866892447, 2996779177318524, 12960731854366496

Offset

1,1

Links

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

Crossrefs

Column 6 of A391823.

Sequence in context: A119073 A028559 A249639 * A062184 A119214 A075138

Adjacent sequences: A163696 A163697 A163698 * A163700 A163701 A163702

Keyword

nonn

Author

R. H. Hardin, Aug 03 2009

Extensions

a(11) onward from Andrew Howroyd, Dec 23 2025

Status

approved