OFFSET
1,1
COMMENTS
Column 2 of A264190.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +a(n-2) -17*a(n-4) +68*a(n-5) +17*a(n-6) +17*a(n-8) -68*a(n-9) -17*a(n-10) +a(n-12) -4*a(n-13) -a(n-14)
EXAMPLE
Some solutions for n=4
..0..1..2....8..3..4....8..1..2....0..3..4....0..3..4....8..1..4....8..3..2
..3..6..5....1..2..5....3..6..5....1..2..5....1..2..5...11..2..5....1..6..5
..4..9..8...14..7..0....4..9..0....6..9..8....6..7..8...14..7..0....4..7..0
..7.10.13....9.10.11....7.12.11....7.10.11....9.12.11....9.10..3....9.12.11
.12.11.14...12.13..6...10.13.14...12.13.14...10.13.14...12.13..6...10.13.14
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 06 2015
STATUS
approved