OFFSET
1,2
COMMENTS
Row 4 of A264676.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
R. H. Hardin, Empirical recurrence of order 81
FORMULA
Empirical recurrence of order 81 (see link above)
EXAMPLE
Some solutions for n=4
..6..0..1..2..3...12..0..1..9..3....6..0..1..2..3....6..0..1..2..3
.17.12.13..7..4...11.18..2..7..4...12..5.19..7..4...17.12.14..7..4
..5.18.11..8..9....5..6.24..8.13...16.10.11..8..9....5.23.24..8..9
.10.23.16.24.14...10.23.16.17.14...21.22.24.13.14...10.11.16.13.18
.15.20.21.22.19...15.20.21.22.19...15.20.17.18.23...15.20.21.22.19
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 20 2015
STATUS
approved