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A220327
Equals two maps: number of nX6 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 nX6 array
0
12, 658, 29467, 1335202, 59893608, 2680626797, 119808040854, 5350328821481
OFFSET
1,1
COMMENTS
Column 6 of A220328
EXAMPLE
Some solutions for n=3
..0..0..1..0..1..0....0..0..0..1..1..0....0..0..0..1..0..1....0..0..0..1..1..0
..1..1..1..1..0..0....0..1..0..0..1..0....0..0..0..1..1..1....1..0..1..1..0..1
..0..1..0..1..0..0....1..1..1..0..1..0....1..0..0..0..1..0....0..1..1..0..1..0
CROSSREFS
Sequence in context: A071307 A195574 A195554 * A281780 A295870 A177322
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 10 2012
STATUS
approved