A069365 Number of 7 X n binary arrays with a path of adjacent 1's from top row to bottom row.

1, 577, 153769, 30856705, 5388274121, 868972410929, 133267613878665, 19752116290408897, 2856738227918860537, 405671453894948801169, 56797093221062281961353, 7862987107940658832635809, 1078636993747832299068001753

Offset

1,2

Links

Table of n, a(n) for n=1..13.

Crossrefs

Cf. 1 X n A000225, 2 X n A005061, n X 2 A001333, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452.

Sequence in context: A154511 A221331 A163042 * A163053 A097770 A252377

Adjacent sequences: A069362 A069363 A069364 * A069366 A069367 A069368

Keyword

nonn,more

Author

R. H. Hardin, Mar 22 2002

Extensions

a(7)-a(13) from Sean A. Irvine, Apr 29 2024

Status

approved