OFFSET
1,1
COMMENTS
Column 1 of A236798
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 8*a(n-1) +8*a(n-2) -204*a(n-3) +224*a(n-4) +1972*a(n-5) -3810*a(n-6) -9220*a(n-7) +24389*a(n-8) +20868*a(n-9) -81294*a(n-10) -13536*a(n-11) +150316*a(n-12) -33360*a(n-13) -148072*a(n-14) +72384*a(n-15) +63616*a(n-16) -48128*a(n-17) -2816*a(n-18) +8192*a(n-19) -1536*a(n-20)
EXAMPLE
Some solutions for n=5
..0..1....1..2....2..1....2..2....2..0....2..1....0..2....0..2....2..1....2..0
..0..1....2..0....2..1....2..1....0..2....0..0....2..0....2..0....1..1....0..2
..1..1....2..2....2..1....2..1....1..2....1..2....2..0....1..2....1..2....2..0
..1..0....0..1....1..2....1..2....0..2....1..0....2..0....2..0....0..2....2..0
..0..1....2..2....2..2....2..1....1..2....1..2....2..0....2..0....1..2....2..0
..1..0....0..1....1..2....1..2....0..2....0..1....2..0....2..0....0..2....2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 31 2014
STATUS
approved