OFFSET
1,1
COMMENTS
Column 7 of A228506
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 6*a(n-1) +50*a(n-2) -171*a(n-3) -514*a(n-4) +1800*a(n-5) +845*a(n-6) -5430*a(n-7) +704*a(n-8) +6175*a(n-9) -1762*a(n-10) -2810*a(n-11) +870*a(n-12) +392*a(n-13) -120*a(n-14)
EXAMPLE
Some solutions for n=4
..1..0..0..1..0..0..0....1..0..0..0..0..0..1....1..0..1..0..1..0..0
..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..1
..0..1..0..0..0..0..0....1..0..0..0..0..0..1....1..0..1..0..0..0..0
..0..0..0..0..0..1..0....0..0..1..0..1..0..0....0..0..0..0..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 23 2013
STATUS
approved