OFFSET
1,1
COMMENTS
Column 6 of A264272.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=2
..0..1..2..3..4.12..6....7..8.11.12..4..5.13....0..1..2..3..4.12..6
.16..8..9.19.11..5.20....0..1.18.19..2..3..6...14.15..9.10.20..5.13
.14.15..7.17.18.10.13...14.15.16.17..9.10.20....7..8.16.17.18.19.11
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 10 2015
STATUS
approved