A208697 Number of nX7 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 1 0 and 1 0 1 vertically.
35, 1225, 8977, 109599, 1103081, 12014735, 126827983, 1356513169, 14425723357, 153741350353, 1637205937955, 17441454604351, 185777794829329, 1978904120738349, 21078662513667499, 224526113423385269
Offset: 1
Keywords
Examples
Some solutions for n=4 ..0..0..0..0..0..0..0....1..1..1..1..0..1..0....0..0..0..0..0..0..0 ..1..0..1..1..0..1..1....0..1..0..1..0..1..0....0..0..0..0..0..0..0 ..1..1..1..1..0..1..1....0..0..0..0..0..0..0....1..0..1..0..1..1..0 ..1..1..0..1..0..1..0....1..0..1..0..1..0..1....1..1..1..1..1..1..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Comments