OFFSET
1,1
COMMENTS
Column 6 of A207741
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 18*a(n-1) -15*a(n-2) -886*a(n-3) +2660*a(n-4) +11504*a(n-5) -45589*a(n-6) -59632*a(n-7) +324536*a(n-8) +106556*a(n-9) -1182417*a(n-10) +142992*a(n-11) +2369549*a(n-12) -855890*a(n-13) -2672392*a(n-14) +1338432*a(n-15) +1706837*a(n-16) -1018340*a(n-17) -603507*a(n-18) +418566*a(n-19) +106712*a(n-20) -93358*a(n-21) -5923*a(n-22) +10536*a(n-23) -500*a(n-24) -506*a(n-25) +51*a(n-26) +8*a(n-27) -a(n-28) for n>29
EXAMPLE
Some solutions for n=4
..0..0..1..1..1..0....0..1..1..1..0..0....0..1..1..0..1..1....1..0..1..1..0..1
..0..0..1..1..0..1....1..0..1..1..1..1....0..1..1..1..1..0....1..1..1..1..1..1
..0..0..1..1..1..0....1..1..0..0..1..1....0..0..1..1..0..1....0..1..1..1..1..0
..0..0..1..1..1..1....1..1..1..1..0..0....0..1..1..1..1..0....1..0..0..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 19 2012
STATUS
approved