OFFSET
1,1
COMMENTS
Row 5 of A223680
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (359/453600)*n^10 + (251/30240)*n^9 + (14533/60480)*n^8 + (583/630)*n^7 + (62303/5400)*n^6 - (4999/1440)*n^5 + (14868751/181440)*n^4 - (1038043/3780)*n^3 + (3156491/8400)*n^2 - (91003/210)*n + 362 for n>2
EXAMPLE
Some solutions for n=3
..0..0..0....0..1..0....1..1..1....0..1..1....1..0..0....1..1..1....1..0..0
..0..0..0....0..0..0....1..1..1....0..1..0....1..1..0....0..0..0....0..0..0
..0..1..0....0..0..0....0..1..0....0..1..1....0..1..0....0..0..0....0..1..0
..0..1..0....0..0..1....0..0..0....1..1..0....0..0..0....0..0..1....0..0..1
..0..1..1....1..1..0....0..1..0....0..0..1....0..1..1....0..0..0....0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 25 2013
STATUS
approved