OFFSET
1,1
COMMENTS
Row 4 of A253698
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-2) +a(n-4) +a(n-5) -3*a(n-6) +2*a(n-7) +a(n-8) -9*a(n-9) +2*a(n-10) +4*a(n-11) -3*a(n-12) +7*a(n-13) -5*a(n-15) -a(n-17) +a(n-18) +a(n-19) for n>26
EXAMPLE
Some solutions for n=4
..1..0..0..1..1....0..1..0..1..0....1..0..0..1..1....1..1..1..1..1
..0..1..0..1..0....1..1..0..1..1....0..1..1..0..0....0..1..0..1..1
..0..1..0..0..1....1..1..1..0..0....1..0..1..0..0....0..1..1..0..0
..0..0..1..1..0....1..0..0..1..0....1..0..0..1..1....1..0..0..1..0
..1..1..0..1..1....0..1..0..0..0....0..1..1..0..1....1..0..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 09 2015
STATUS
approved