A220934 Equals two maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 nX5 array.
7, 200, 5912, 172904, 4983202, 143495572, 4129000493, 118791182035, 3417440488681, 98313052773312, 2828261800424005, 81363108971612428, 2340643785326878730, 67335342944117783361, 1937094540263542667587
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..1..0..1..1....0..0..1..0..0....0..1..1..0..0....0..0..0..0..1 ..0..0..0..0..1....1..1..1..0..0....1..0..0..0..0....0..1..0..0..1 ..0..1..1..1..0....0..0..1..1..0....0..0..0..1..0....0..0..0..1..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..16
Comments