A069366 Number of 8 X n binary arrays with a path of adjacent 1's from top row to bottom row.

1, 1393, 812849, 344356289, 124693133113, 41278350729313, 12913642307413193, 3888492110032895921, 1139431807812280823353, 327195886636045773364289, 92506527736225809457497129, 25834416752721407468468718385, 7143459701634079128687197933529

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: A235657 A094666 A163043 * A163054 A110844 A015990

Adjacent sequences: A069363 A069364 A069365 * A069367 A069368 A069369

Keyword

nonn

Author

R. H. Hardin, Mar 22 2002

Extensions

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

Status

approved