OFFSET
1,1
COMMENTS
Column 2 of A252201
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +a(n-2) +7*a(n-3) +7*a(n-4) +7*a(n-5) +4*a(n-6) -2*a(n-7) -4*a(n-8) -9*a(n-9) -8*a(n-10) -7*a(n-11) -3*a(n-12) +a(n-13) +3*a(n-14) +2*a(n-15) +a(n-16) for n>21
EXAMPLE
Some solutions for n=4
..3..3..3..3....3..3..3..3....3..3..3..2....3..3..2..3....2..1..1..0
..3..3..3..3....3..3..3..2....3..2..3..3....3..3..3..3....0..0..1..1
..3..3..3..3....3..3..3..3....3..3..3..3....3..3..3..3....0..1..0..0
..3..2..3..3....3..3..3..3....3..3..3..3....3..3..3..3....2..0..0..1
..3..3..3..3....2..3..3..2....2..3..3..3....3..3..3..2....2..1..1..0
..3..3..3..3....3..3..3..3....3..3..3..3....3..3..2..3....0..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 15 2014
STATUS
approved