OFFSET
1,1
COMMENTS
Column 4 of A264299.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..5..6..4..8..3....5..6..1..2..3....5..0..4..2..3....2..3..1..8..9
..0..1..2..7.14....0..8..9..7..4....7..1..6.13..8....0..5..6..7..4
.12.16.17.18..9...12.10.11.18.13...15.10.11.12..9...12.13.11.18.19
.10.11.19.13.24...17.21.16.23.14...17.21.16.23.14...10.21.16.17.14
.15.20.21.22.23...15.20.24.22.19...22.20.24.18.19...15.20.24.22.23
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 11 2015
STATUS
approved