OFFSET
1,2
COMMENTS
Column 4 of A229565.
EXAMPLE
Some solutions for n=3:
10 12 7 9 11 10 6 9 8 8 11 10 10 12 7 9
14 9 12 10 7 14 7 12 12 11 14 8 9 9 8 8
13 10 13 11 10 11 11 10 11 10 13 6 7 11 11 7
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 26 2013
STATUS
approved