OFFSET
1,2
COMMENTS
Column 7 of A264534.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..21
EXAMPLE
Some solutions for n=4
.18.19.10.11.22.23..5..6....8..9.10..2.12.23..5..6...18.19.20..2.22.23..5..6
..0..1..2..3..4.21.13..7....0..1.28..3..4.21.22..7....0..1..9..3..4.31.13..7
..8..9.26.27.12.20.14.15...34.25.36.11.19.13.14.15....8.35.10.11.12.39.14.15
.16.17.25.35.36.37.38.39...16.17.18.26.20.37.38.39...16.17.25.26.27.21.29.30
.24.32.33.34.28.29.30.31...24.32.33.27.35.29.30.31...24.32.33.34.28.36.37.38
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2015
STATUS
approved