OFFSET
1,1
COMMENTS
Column 2 of A263955.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..159
EXAMPLE
Some solutions for n=4
..0..1..2..5....0..1..2..3....0..1..4..5....0..1..2..5....0..1..4..5
..4.14.15..7....4.11.15..7....2.14..8..9....4.14..8..9....2..3.15..7
..6..9..3.11....8..9.10..5....6.15..3.18....6..7..3.13....8..9.12.11
.10.20..8.22...12.13.23..6...12.19..7.22...10.11.21.22...10.19.14..6
.16.17.12.21...16.17.18.19...16.23.11.10...16.23.20.19...16.23.18.13
.18.19.13.23...20.21.22.14...20.21.13.17...18.12.15.17...20.21.22.17
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 30 2015
STATUS
approved