A069367 Number of 9 X n binary arrays with a path of adjacent 1's from top row to bottom row.

1, 3363, 4296863, 3842988975, 2885579381831, 1960665141991079, 1251002814214706415, 765068584835726823447, 454016084146597129480639, 263496356226918378172858791, 150343681421865609328377897039, 84641600245355780352751022513463, 47141832001173360326967315743610399

Offset: 1

Author

R. H. Hardin, Mar 22 2002

Keywords

• nonn

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.

Extensions

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