OFFSET
1,1
COMMENTS
Column 3 of A251819
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +a(n-2) +13*a(n-3) +31*a(n-4) +43*a(n-5) +25*a(n-6) -64*a(n-7) -125*a(n-8) -49*a(n-9) +79*a(n-10) +119*a(n-11) +20*a(n-12) -53*a(n-13) -42*a(n-14) -12*a(n-15) +6*a(n-16) +4*a(n-17) +4*a(n-18) for n>21
EXAMPLE
Some solutions for n=4
..1..1..1..0..1....1..1..0..1..1....1..1..1..1..0....1..1..1..1..1
..1..1..1..1..1....0..2..0..0..2....1..1..1..1..1....1..0..1..1..1
..1..1..1..1..1....1..2..2..1..2....1..1..1..0..1....1..1..1..1..1
..1..1..1..1..1....1..1..0..1..1....1..1..1..1..1....1..1..1..1..1
..1..0..1..1..1....0..2..0..0..2....1..1..0..1..1....1..1..1..1..1
..1..1..1..0..1....1..2..2..1..2....0..1..1..1..0....1..0..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2014
STATUS
approved