A163035 Number of nX9 binary arrays with all 1s connected and a path of 1s from top row to bottom row

45, 9689, 3730303, 1180202569, 340759985173, 95151328370775

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Chaim Goodman-Strauss, Notes on the number of m × n binary arrays with all 1’s connected and a path of 1’s from top row to bottom row (May 21 2020)

Chaim Goodman-Strauss, Mma notebook to accompany the above document

Formula

For a formula see the Goodman-Strauss links. - N. J. A. Sloane, May 22 2020

Crossrefs

Cf. A163029-A163036.

Sequence in context: A209275 A199355 A290819 * A358707 A184136 A101994

Adjacent sequences: A163032 A163033 A163034 * A163036 A163037 A163038

Keyword

nonn

Author

R. H. Hardin Jul 20 2009

Status

approved