OFFSET
1,2
COMMENTS
Column 3 of A183927
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n)=2*a(n-1)-a(n-2)-a(n-5)+2*a(n-6)-a(n-7)+a(n-8)-a(n-9)-a(n-10)+a(n-11)+a(n-13)-a(n-14)-a(n-16)+2*a(n-18)-a(n-19)+a(n-20)-2*a(n-21)+a(n-23)+a(n-24)-a(n-25)-a(n-28)+2*a(n-29)-a(n-30)-a(n-33)+2*a(n-34)-a(n-35)-a(n-38)+a(n-39)+a(n-40)-2*a(n-42)+a(n-43)-a(n-44)+2*a(n-45)-a(n-47)-a(n-49)+a(n-50)+a(n-52)-a(n-53)-a(n-54)+a(n-55)-a(n-56)+2*a(n-57)-a(n-58)-a(n-61)+2*a(n-62)-a(n-63)
EXAMPLE
All solutions for n=4
.-1...-2....0...-1...-2...-3...-2...-2...-1...-3...-1...-2
.-1...-1....0...-1....0....1...-1...-2....0....0...-1....0
..1....0....0....0....1....1....1....2....0....1...-1....0
..1....3....0....2....1....1....2....2....1....2....3....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 08 2011
STATUS
approved