OFFSET
1,1
COMMENTS
Column 3 of A257361
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-3) +16*a(n-4) +8*a(n-5) +4*a(n-6) +2*a(n-7) +18*a(n-8) +6*a(n-9) -4*a(n-10) -18*a(n-11) -141*a(n-12) -60*a(n-13) +48*a(n-14) +18*a(n-15) -117*a(n-16) -66*a(n-17) +48*a(n-19) +279*a(n-20) +108*a(n-21) -12*a(n-22) -12*a(n-23) +15*a(n-24) +36*a(n-25) +16*a(n-26) -6*a(n-27) -36*a(n-28) -8*a(n-29) -4*a(n-30) -2*a(n-31) -a(n-32) -2*a(n-33) +a(n-36) for n>39
EXAMPLE
Some solutions for n=4
..1..1..1..0..0....1..1..1..0..1....0..0..0..1..0....0..0..1..0..0
..0..1..1..0..0....1..0..0..1..1....0..1..1..0..1....1..1..1..0..0
..1..0..0..1..1....1..0..0..1..1....1..1..0..1..1....1..1..0..0..1
..1..0..0..1..1....1..1..1..0..0....1..0..1..1..0....1..0..0..1..1
..0..1..1..0..1....1..1..1..0..0....1..1..1..0..1....1..0..1..1..1
..1..1..1..1..1....1..1..0..1..1....1..1..0..1..0....1..1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 20 2015
STATUS
approved