OFFSET
1,1
COMMENTS
Column 4 of A232406.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +17*a(n-2) -7*a(n-3) -48*a(n-4) -71*a(n-5) +101*a(n-6) +114*a(n-7) +121*a(n-8) -18*a(n-9) -143*a(n-10) -281*a(n-11) -409*a(n-12) -135*a(n-13) +659*a(n-14) +421*a(n-15) +172*a(n-16) -528*a(n-17) -162*a(n-18) -87*a(n-19) +454*a(n-20) +647*a(n-21) +293*a(n-22) +374*a(n-23) +143*a(n-24) +108*a(n-25) -19*a(n-26) -14*a(n-27) -6*a(n-28) +2*a(n-29).
EXAMPLE
Some solutions for n=4
..1..0..2..1..0....0..1..0..1..2....2..1..0..1..2....0..1..2..1..0
..2..1..0..2..1....1..2..1..0..1....1..0..1..2..1....1..2..1..2..1
..1..0..2..1..0....0..1..2..1..0....0..1..0..1..0....2..1..0..1..2
..0..1..0..2..1....1..0..1..2..1....1..2..1..2..1....1..2..1..0..1
..1..2..1..0..2....2..1..0..1..0....0..1..2..1..0....0..1..0..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 23 2013
STATUS
approved