OFFSET
1,1
COMMENTS
Row 2 of A231940.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 16*a(n-1) -86*a(n-2) +190*a(n-3) +319*a(n-4) -4988*a(n-5) +10423*a(n-6) +3869*a(n-7) -14328*a(n-8) +132748*a(n-9) -44748*a(n-10) -130980*a(n-11) -63336*a(n-12) -493560*a(n-13) -373248*a(n-14) -51840*a(n-15).
EXAMPLE
Some solutions for n=7
..0..0..0..0..0..2..3....0..0..3..0..1..0..0....0..0..2..2..1..1..2
..2..0..0..0..3..1..1....0..0..0..0..0..2..0....0..0..1..3..1..1..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 15 2013
STATUS
approved