OFFSET
1,1
COMMENTS
Column 2 of A236746
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 17*a(n-1) -78*a(n-2) -142*a(n-3) +1902*a(n-4) -2258*a(n-5) -14868*a(n-6) +37484*a(n-7) +39431*a(n-8) -204023*a(n-9) +60026*a(n-10) +473554*a(n-11) -502900*a(n-12) -310088*a(n-13) +766120*a(n-14) -297584*a(n-15) -171072*a(n-16) +157120*a(n-17) -32640*a(n-18)
EXAMPLE
Some solutions for n=4
..1..1..0....1..1..0....1..1..2....0..1..2....2..0..1....1..0..2....2..1..0
..1..2..1....1..1..1....1..1..1....2..1..0....0..0..0....0..1..0....1..1..2
..0..1..1....1..1..2....0..1..1....1..1..1....2..0..0....0..2..0....1..1..0
..1..1..2....2..0..1....1..1..1....1..2..1....0..0..0....0..1..0....1..1..1
..2..1..1....1..1..2....1..2..1....0..1..1....0..0..0....2..0..2....2..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 30 2014
STATUS
approved