OFFSET
1,1
COMMENTS
Row 7 of A223838
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1/87178291200)*n^14 - (1/1779148800)*n^13 + (1/45619200)*n^12 - (53/136857600)*n^11 + (137/17418240)*n^10 - (1229/29030400)*n^9 + (739771/609638400)*n^8 - (1517923/87091200)*n^7 + (321517/691200)*n^6 - (12905723/3110400)*n^5 + (4378639787/119750400)*n^4 - (369357239/2494800)*n^3 + (61973609597/151351200)*n^2 - (519380551/360360)*n + 3759 for n>8
EXAMPLE
Some solutions for n=3
..0..0..0....1..0..0....0..0..0....0..0..0....0..0..0....0..0..1....1..0..0
..0..0..0....1..0..0....0..0..0....0..0..0....0..1..0....0..0..1....1..0..0
..0..1..0....1..1..0....1..0..0....0..0..0....0..1..0....0..0..1....1..1..0
..0..1..0....1..1..0....1..1..0....0..0..0....0..1..1....0..0..1....1..1..0
..0..1..0....1..1..0....1..1..0....1..1..0....1..1..1....0..1..1....1..1..0
..0..1..0....1..1..0....1..1..0....1..1..0....1..1..1....0..1..1....1..1..1
..0..1..0....1..1..0....1..1..1....1..1..0....1..1..1....0..1..1....1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 27 2013
STATUS
approved