OFFSET
1,1
COMMENTS
Column 7 of A219410
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..123
FORMULA
Empirical: a(n) = 37*a(n-1) +3825*a(n-2) +81558*a(n-3) +510200*a(n-4) -2139740*a(n-5) -24964195*a(n-6) +44570360*a(n-7) +423494493*a(n-8) -1028219843*a(n-9) -2247233985*a(n-10) +9983856169*a(n-11) -7627675319*a(n-12) -13359810842*a(n-13) +28791113562*a(n-14) -18765233198*a(n-15) +2128700109*a(n-16) +2355058186*a(n-17) -585137197*a(n-18) -134608755*a(n-19) +39387120*a(n-20) +3106800*a(n-21) -864000*a(n-22) for n>24
EXAMPLE
Some solutions for n=3
..0..0..1..0..0..0..0....0..0..1..1..0..1..1....0..0..0..1..1..0..0
..0..0..1..0..1..0..0....0..0..0..0..0..0..1....0..1..0..0..0..1..0
..0..1..1..0..0..1..1....1..0..1..0..1..0..0....1..1..0..0..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 19 2012
STATUS
approved