OFFSET
1,1
COMMENTS
Column 4 of A264172.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..0..8..2.14..4....0.12..2..3..4...11.12..1.14..4....7..1..9..2..3
..5..1.18..3..9....5..1..6.19..8....0..6..2..3..8....0..6.18..8..4
.10..6..7.12.13...17.10..7.24..9....5.22..7.13..9....5.10.19.24.13
.15.11.24.17.19...15.11.16.13.14...10.15.16.18.19...15.11.12.17.14
.20.16.21.22.23...20.21.22.18.23...20.21.17.23.24...20.16.21.22.23
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 06 2015
STATUS
approved