OFFSET
1,1
COMMENTS
Column 5 of A251845.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 64*a(n-3) -1282*a(n-6) +10366*a(n-9) -44576*a(n-12) +120485*a(n-15) -214956*a(n-18) +245225*a(n-21) -170457*a(n-24) +68626*a(n-27) -15983*a(n-30) +2674*a(n-33) -185*a(n-36) for n>43.
EXAMPLE
Some solutions for n=4
..1..0..0..1..0..0..1....0..1..0..0..1..0..0....0..1..0..3..1..0..0
..1..0..3..1..0..0..1....0..1..0..0..1..0..0....1..2..1..1..2..1..1
..2..1..1..2..1..1..2....1..2..1..1..2..1..1....0..1..3..0..1..0..0
..1..0..0..1..0..3..1....3..1..0..0..1..3..0....3..1..0..0..1..0..3
..1..3..0..1..0..0..1....0..1..3..0..1..0..0....3..2..1..1..2..1..1
..2..1..1..2..1..1..2....1..2..1..1..2..1..1....0..1..0..0..1..3..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2014
STATUS
approved