A163028 Number of n X n binary arrays with all 1s connected and a path of 1s from the top row to the bottom row.

1, 7, 144, 9362, 2075271, 1642690309, 4741764527414, 50301538415794232, 1966097907322824101263, 283293243539676951470723543, 150432229851691149674511947484546, 294212923045987478712868787193615243838, 2117957004814862762696618942898524645283531305

Offset: 1

Author

R. H. Hardin, Jul 20 2009

Keywords

• nonn

Links

• Andrew Howroyd, Table of n, a(n) for n = 1..15

Crossrefs

Main diagonal of A359574.

Extensions

Terms a(8) and beyond from Andrew Howroyd, Jan 06 2023