OFFSET
1,1
COMMENTS
Column 5 of A222438
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) -a(n-2) +a(n-4) -a(n-6) +2*a(n-7) -a(n-8) +a(n-10) -a(n-12) +2*a(n-13) -a(n-14) +2*a(n-16) -3*a(n-17) +2*a(n-18) -a(n-19) -a(n-21) +2*a(n-22) -3*a(n-23) +2*a(n-24) -a(n-25) -a(n-27) +2*a(n-28) -3*a(n-29) +2*a(n-30) -a(n-31) for n>65
EXAMPLE
Some solutions for n=7, one extended zero followed by filtered positions
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..0....0....0....0....0....0....0....0....0....0....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....1....0....1....0....1....1....0....0....1
..0....1....0....0....0....0....1....0....1....0....0....0....0....0....1....0
..0....0....1....0....0....1....0....1....0....0....0....0....0....0....0....0
..0....0....0....0....0....0....1....0....0....1....1....0....0....0....0....0
..0....0....0....0....0....0....0....1....0....0....0....0....1....0....1....0
..0....1....0....0....1....1....0....0....0....0....0....1....0....0....0....0
..1....0....0....0....0....0....0....0....1....0....0....0....0....1....0....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 20 2013
STATUS
approved