A163722 Number of n X 10 binary arrays with all 1s connected, a path of 1s from top row to bottom row, and no 1 having more than two 1s adjacent.

55, 1787, 32754, 576824, 11140954, 184991460, 2682337149, 37251349309, 517290829677, 7192686302847, 99101427302273, 1342002449236539, 17841955470538664, 233843453619711056, 3035903816307226792, 39154496439976849714, 502086123726627399334, 6400983410264152162382

Offset

1,1

Links

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

Crossrefs

Column 10 of A391822.

Sequence in context: A320823 A166833 A004352 * A321034 A275942 A217758

Adjacent sequences: A163719 A163720 A163721 * A163723 A163724 A163725

Keyword

nonn

Author

R. H. Hardin, Aug 03 2009

Extensions

a(6) onward from Andrew Howroyd, Dec 24 2025

Status

approved