A069384 Number of n X 9 binary arrays with a path of adjacent 1's from top row to bottom row.

511, 242461, 105683341, 43843180113, 17792504911231, 7146486319870849, 2856738227918860537, 1139431807812280823353, 454016084146597129480639, 180827014727915133583355805, 72007238386097441302774324845, 28672084199736350940864453233905

Offset: 1

Author

R. H. Hardin, Mar 22 2002

Keywords

• nonn

Links

• Sean A. Irvine, Table of n, a(n) for n = 1..200

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

More terms from Sean A. Irvine, Apr 30 2024