OFFSET
1,1
COMMENTS
Column 3 of A221378
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 53*a(n-1) -1022*a(n-2) +9430*a(n-3) -46832*a(n-4) +127474*a(n-5) -173901*a(n-6) +70397*a(n-7) +60137*a(n-8) -23731*a(n-9) -21147*a(n-10) -4513*a(n-11) -40*a(n-12) +152*a(n-13) +12*a(n-14) for n>15
EXAMPLE
Some solutions for n=3
..0..2..1....0..1..2....1..0..1....1..2..0....2..0..1....0..2..1....1..0..1
..2..0..0....1..0..2....2..0..2....1..2..1....0..1..2....0..1..1....1..0..2
..0..2..2....1..1..1....0..2..1....1..0..1....2..0..1....2..0..2....0..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 13 2013
STATUS
approved