OFFSET
1,2
COMMENTS
Row 4 of A264313.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..177
EXAMPLE
Some solutions for n=4
..0..1..9..2..3....0..1..9..2..3....7..0..1..2..4....0..1..2..3..4
.12..6..5..7..4...12..5..6..7..4....5..6.14..3..8....5.13.14..8..7
.10.18.11..8.14...17.10.19..8.13...17.10.12.11..9...10..6.11.12..9
.22.23.24.13.17...22.11.16.18.14...22.16.24.13.19...22.15.24.17.19
.15.16.20.21.19...15.21.20.23.24...15.20.21.18.23...20.16.21.18.23
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 11 2015
STATUS
approved