OFFSET
1,2
COMMENTS
Row 3 of A264364.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..7..1..0..3..4....7..1..0..3..4....0..8..9..3..2....7..1..0..3..4
..5..6..2..8..9....5..6..2..8..9....5..1.14..6..4...12..6..2..8..9
.10.18.19.13.12...10.18.12.13.14...10.18..7.13.12....5.18.19.11.14
.15.11.17.16.14...15.11.17.16.19...15.11.17.16.19...10.16.15.13.17
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 12 2015
STATUS
approved