OFFSET
1,2
COMMENTS
Column 2 of A198627
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n) = 26*a(n-1) -225*a(n-2) +616*a(n-3) +987*a(n-4) -5730*a(n-5) -1309*a(n-6) +15122*a(n-7) +15401*a(n-8) -20868*a(n-9) -34559*a(n-10) -3370*a(n-11) +29842*a(n-12) +18864*a(n-13) -3196*a(n-14) -9000*a(n-15) -2600*a(n-16)
EXAMPLE
Some solutions for n=4
..0..0....0..1....0..0....0..0....0..0....0..1....0..0....0..1....0..0....0..0
..0..0....0..1....0..0....1..1....1..1....0..1....0..0....0..1....1..1....1..2
..1..1....0..0....1..1....1..1....2..0....0..2....0..1....2..2....2..3....1..2
..0..0....1..1....2..2....1..1....2..0....0..2....0..1....1..1....2..3....3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 27 2011
STATUS
approved