OFFSET
1,2
COMMENTS
Column 2 of A264534.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 10*a(n-2) +6*a(n-3) -42*a(n-4) -40*a(n-5) +117*a(n-6) +143*a(n-7) -222*a(n-8) -266*a(n-9) +272*a(n-10) +266*a(n-11) -222*a(n-12) -143*a(n-13) +117*a(n-14) +40*a(n-15) -42*a(n-16) -6*a(n-17) +10*a(n-18) -a(n-20)
EXAMPLE
Some solutions for n=4
..3..0..1....3..4..1....8..4..1....3..4..5....3..4..1....8..4..1....3..0..5
..6..7..2....0..7..2....0..7..2....0..1..2....0..7..2....0..7..2....6..1..2
.14..4..5...14.10..5....3..6..5...14..6..7...14..6..5....3.10..5...14..4..7
.12.13..8....6.13..8...12.13.14...12.13..8...12.13..8....6.13.14...12.13..8
..9.10.11....9.12.11....9.10.11....9.10.11....9.10.11....9.12.11....9.10.11
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2015
STATUS
approved