A069437 Half the number of 11 X n binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.

1023, 2077552, 4174954460, 8318320069722

Offset

1,1

Links

Table of n, a(n) for n=1..4.

Crossrefs

Cf. 2 X n A000079, n X 1 A000225, 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: A022192 A069385 A069411 * A212934 A263168 A336779

Adjacent sequences: A069434 A069435 A069436 * A069438 A069439 A069440

Keyword

nonn

Author

R. H. Hardin, Mar 22 2002

Status

approved