OFFSET
1,1
COMMENTS
Column 6 of A264520.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..9..8..0.12..2..3.13....9..8.11.12..2..3..4....9.10..0..1.13.12..4
.16..1.18.17..4..5..6....0..1.16.17.20..5..6...16.15..2..3.20..5..6
..7.24.23.10.11.26.27....7.24.14.10.25.26.13....7..8.14.24.11.17.18
.14.15.30.33.34.19.20...28.15.32.33.18.19.34...30.31.32.33.23.19.34
.21.22.28.29.25.31.32...21.22.23.29.30.31.27...21.22.28.29.25.26.27
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 16 2015
STATUS
approved