A163033 Number of n X 7 binary arrays with all 1s connected and a path of 1s from top row to bottom row.
28, 1608, 143342, 11457514, 866126030, 64270256276, 4741764527414, 349218174915782, 25705066468491048, 1891784307926020004, 139221054649194353330, 10245491277444041078478, 753978851322477798813560, 55486218768479949691575070, 4083297106688472106576343018
Offset: 1
Keywords
Links
- Andrew Howroyd, Table of n, a(n) for n = 1..200
- 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
Extensions
Terms a(9) and beyond from Andrew Howroyd, Jan 06 2023