A069407 Half the number of n X 7 binary arrays with a path of adjacent 1's and a path of adjacent 0's from top row to bottom row.

63, 6069, 476389, 33438451, 2230830597

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Crossrefs

Cf. 1 X n A000225, 2 X n A016269, 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: A195620 A238994 A364745 * A342586 A046190 A296782

Adjacent sequences: A069404 A069405 A069406 * A069408 A069409 A069410

Keyword

nonn

Author

R. H. Hardin, Mar 22 2002

Status

approved