OFFSET
1,1
COMMENTS
Row 4 of A264506.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..1..2..3..7..8....1..0..3..4..8....1..2..6..4..3....1..2..6..4..3
..0..5..6..9..4....6..5..2..9.13....0..7..8.12.13....0.10..8..7.13
.11.15.13.12.18...11.12..7.14.18....5.10.11.17..9....5.15.11.14..9
.10.20.16.19.14...10.15.16.22.23...16.15.18.22.14...16.20.12.17.18
.21.22.17.24.23...21.20.17.24.19...21.20.23.24.19...21.22.23.24.19
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 15 2015
STATUS
approved