OFFSET
1,2
COMMENTS
Row 5 of A264285.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..7..0..1..3..4....7..0..1..2..4....7..0..2..3..4....0..1..2..3..4
..5..6..2..8..9...12..5..6..3..9....5..1..6..8..9....5..6..7..8..9
.10.18.11.12.14...10.11.19..8.14...10.11.19.12.14...17.10.11.12.14
.15.23.16.13.19...15.16.17.13.18...15.16.17.13.18...15.16.24.13.19
.27.21.17.22.24...27.20.21.23.24...20.21.29.22.24...27.20.22.18.23
.20.25.26.28.29...25.26.22.28.29...25.26.27.23.28...25.21.26.28.29
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 10 2015
STATUS
approved