OFFSET
1,2
COMMENTS
Row 5 of A264017.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 43*a(n-1) -a(n-2) +1848*a(n-4) -79464*a(n-5) +1848*a(n-6) -1848*a(n-8) +79464*a(n-9) -1848*a(n-10) +a(n-12) -43*a(n-13) +a(n-14) for n>18
EXAMPLE
Some solutions for n=3
..0..1..2..3...10.11..2..3....0..1..2..3....6..1..2..3....6..1..2..3
..4.15..6..7....4.15..6..7...10..5..6..7....4.11..0..7...10..5..0..7
.14..9.10.11....8.19..0..1...18.19..4.11...18.15.10..5...18.15..4.11
.18.19..8..5...12.23.14..5...12.13.14.15...12.13.14..9...12.13.14..9
.22.23.12.13...22.17.18..9...16.23..8..9...22.23..8.19...22.23..8.19
.20.21.16.17...20.21.16.13...20.21.22.17...20.21.16.17...20.21.16.17
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 01 2015
STATUS
approved