A297600 Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 5 neighboring 1s.
1, 178, 1701, 6962, 93150, 1172288, 9403199, 85828150, 919035936, 8853487049, 82411356392, 809231737581, 7936987592888, 76162052363914, 735775369925651, 7159378085264000, 69324523431873026, 670205953180878528
Offset: 1
Keywords
Examples
Some solutions for n=5 ..0..0..0..0..0. .0..1..0..1..0. .0..0..1..0..1. .1..0..1..0..0 ..1..1..0..1..1. .1..0..0..0..1. .0..0..1..1..0. .1..1..0..0..0 ..0..0..0..0..0. .0..0..0..0..0. .0..0..1..0..1. .1..0..1..0..0 ..1..1..0..1..1. .0..1..0..1..1. .1..0..0..0..0. .1..0..0..0..0 ..0..0..0..0..0. .1..0..0..0..0. .0..1..0..0..0. .0..1..0..0..0 ..0..0..0..0..0. .0..0..0..1..0. .0..0..0..0..0. .0..1..0..1..1 ..0..0..0..0..0. .1..1..0..0..1. .1..1..0..1..1. .1..0..0..0..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A297595.
Comments