OFFSET
1,1
COMMENTS
Column 4 of A251950
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 42*a(n-3) -485*a(n-6) +1193*a(n-9) -6286*a(n-12) +16999*a(n-15) -43581*a(n-18) +70906*a(n-21) -74639*a(n-24) +37823*a(n-27) -54*a(n-30) -1971*a(n-33) +54*a(n-36) for n>39
EXAMPLE
Some solutions for n=4
..1..0..1..1..3..1....0..2..0..0..2..0....0..0..2..0..3..2....1..0..1..1..3..1
..3..2..0..0..2..3....1..3..1..1..0..1....1..1..3..1..1..0....1..3..1..1..0..1
..1..0..1..1..0..1....1..0..1..1..0..1....1..1..0..1..1..0....0..2..0..0..2..0
..1..0..1..1..0..1....0..2..0..0..2..3....0..3..2..0..0..2....1..0..1..1..0..1
..3..2..0..0..2..3....1..0..1..1..0..1....1..1..0..1..1..3....1..0..1..1..0..1
..1..0..1..1..3..3....1..3..1..1..3..1....1..1..3..1..1..0....0..2..0..0..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 11 2014
STATUS
approved