OFFSET
1,2
COMMENTS
Row 3 of A264313.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..0..8..1..3..2....7..8..1..2..3....7..0..9..1..2....7..0..9..3..4
.12.13..5..7..4....0.13.14..6..4....5.13..6..3..4....5..1..2..6..8
.17..6.19.11..9....5.11.19.12..9...10.18.19..8.12...17.18.11.12.14
.10.16.15.18.14...10.15.17.16.18...15.11.16.17.14...10.16.15.13.19
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 11 2015
STATUS
approved