OFFSET
1,2
COMMENTS
Column 6 of A264655.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..7..2..9.10..5..6.13....1..8..3.10.11..6.13....1..8..3..4.11..6.13
..8.15.16.17.12..4.20...14..0.16..2.12..4..5...14..9.10.17.12.19..5
.21.22..0..1.19..3.27...21..7.17..9.19.20.27...21..7..0.24..2.20.27
.28.14.24.25.32.18.11...28.23.15.31.26.33.34...28.23.15.31.26.33.34
.29.30.31.23.33.34.26...29.30.22.32.24.25.18...29.30.22.32.16.25.18
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 20 2015
STATUS
approved