A163703 Number of n X 10 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.

10, 507, 11091, 196626, 3502398, 53366061, 743652491, 10296239208, 144390981178, 2018579386058, 27738426240650, 373050894708787, 4927203079396806, 64298082755419571, 832730054512292233, 10722480624309254026, 137278055938711798054, 1747024145628793638446

Offset

1,1

Links

Table of n, a(n) for n=1..18.

Crossrefs

Column 10 of A391823.

Sequence in context: A042209 A272394 A356725 * A218720 A180476 A003399

Adjacent sequences: A163700 A163701 A163702 * A163704 A163705 A163706

Keyword

nonn

Author

R. H. Hardin, Aug 03 2009

Extensions

a(7) onward from Andrew Howroyd, Dec 23 2025

Status

approved