OFFSET
1,1
COMMENTS
Row 3 of A264244.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..1..2..6..7..4....0..1..2..3..4....0..5..6..3..4....0..5..2..3..4
..5..0.11..9..3....5.10..8.12..9....7..8..1..2..9....6.10..1..9.13
.10.12.13.14..8...11.15..6..7.14...10.12.16.14.18...12.15.14..7..8
.15.16.17.18.19...16.17.18.19.13...15.17.11.19.13...16.17.11.18.19
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 09 2015
STATUS
approved