A163709 Number of nX7 binary arrays with all 1s connected, a path of 1s from left column to lower right corner, and no 1 having more than two 1s adjacent

1, 47, 642, 6336, 53065, 381729, 2583720, 17293440

Offset

1,2

Links

Table of n, a(n) for n=1..8.

Crossrefs

Sequence in context: A142577 A098226 A106310 * A244880 A101793 A262120

Adjacent sequences: A163706 A163707 A163708 * A163710 A163711 A163712

Keyword

nonn

Author

R. H. Hardin Aug 03 2009

Status

approved