A069412 Half the number of n X 12 binary arrays with a path of adjacent 1's and a path of adjacent 0's from top row to bottom row.

2047, 7859215, 26020259201, 75628309151275

Offset

1,1

Links

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

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: A160964 A022193 A069386 * A069438 A131952 A065341

Adjacent sequences: A069409 A069410 A069411 * A069413 A069414 A069415

Keyword

nonn

Author

R. H. Hardin, Mar 22 2002

Status

approved