A163718 Number of n X 6 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.

21, 193, 1186, 7338, 42833, 224493, 1122855, 5562337, 27320312, 131882802, 624068383, 2904782675, 13359527161, 60875951425, 275136705784, 1234078730970, 5496880942807, 24333589690641, 107132845600909, 469366618433789, 2047241264946420, 8893203028508488, 38488262161303999

Offset

1,1

Links

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

Crossrefs

Column 6 of A391822.

Sequence in context: A223090 A010827 A022713 * A164606 A027780 A108679

Adjacent sequences: A163715 A163716 A163717 * A163719 A163720 A163721

Keyword

nonn

Author

R. H. Hardin, Aug 03 2009

Extensions

a(10) onward from Andrew Howroyd, Dec 22 2025

Status

approved