OFFSET
1,1
COMMENTS
Column 5 of A218842
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..65
FORMULA
Empirical: a(n) = 12*a(n-1) +6*a(n-2) +103*a(n-3) -128*a(n-4) -41*a(n-5) -630*a(n-6) -523*a(n-7) +1154*a(n-8) -93*a(n-9) +762*a(n-10) -787*a(n-11) -416*a(n-12) +549*a(n-13) -178*a(n-14) +35*a(n-15) +11*a(n-16) -7*a(n-17) for n>18
EXAMPLE
Some solutions for n=3
..0..0..1..0..0....0..0..0..0..0....0..0..0..1..1....1..1..0..0..0
..1..0..1..0..1....0..0..1..0..0....0..0..0..0..0....0..0..1..0..1
..0..0..0..0..0....1..0..0..0..1....0..1..1..0..0....1..1..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 07 2012
STATUS
approved