OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3:
1 -2 -2 -3 -1 2 -2 -3 -1 0 -1 1 1 -3 -2 -2
2 1 -1 -1 2 2 -2 -2 0 1 -1 1 3 2 0 3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 06 2013
STATUS
approved