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

1,2

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: A108002 A221332 A163044 * A031556 A265625 A014441

Adjacent sequences: A069364 A069365 A069366 * A069368 A069369 A069370

Keyword

nonn

Author

R. H. Hardin, Mar 22 2002

Extensions

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

Status

approved