OFFSET
1,1
COMMENTS
Column 5 of A263519.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..0..1..2..3..4..5....0..2..8..9.10.11....0..1..2..4.10.11....0..1..2..3..4..5
..6.13..8.10..9.11....6..1..7..3..4..5....6.13..7..3..9..5....6.13..8..9.10.17
.12..7.14.15.16.23...12.13.14.16.15.23...12.19..8.15.16.17...12..7.14.21.15.11
.18.20.19.22.21.17...18.19.20.22.21.17...18.20.14.21.23.22...19.18.20.22.16.23
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 19 2015
STATUS
approved