1,1

R. H. Hardin, Table of n, a(n) for n=1..21

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

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

Cf. A163029-A163036.

Sequence in context: A059760 A059615 A215855 * A065920 A273624 A223424

Adjacent sequences: A163028 A163029 A163030 * A163032 A163033 A163034

nonn

R. H. Hardin Jul 20 2009

approved