OFFSET
1,1
COMMENTS
Column 3 of A227256
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1/9979200)*n^11 - (1/453600)*n^10 + (1/11340)*n^9 - (71/60480)*n^8 + (163/11200)*n^7 - (251/2700)*n^6 + (49501/90720)*n^5 - (319397/181440)*n^4 + (486707/113400)*n^3 + (34133/25200)*n^2 - (238061/6930)*n + 65 for n>3
EXAMPLE
Some solutions for n=4
..1..1..1....1..1..1....1..1..1....1..0..0....1..1..1....1..1..0....1..0..0
..1..0..0....1..0..0....1..1..0....0..1..1....1..1..0....1..0..1....0..1..1
..0..1..1....0..1..1....1..0..1....0..1..0....1..1..0....1..0..0....1..1..0
..1..1..0....1..1..1....0..0..1....1..1..0....1..0..0....1..0..0....1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 04 2013
STATUS
approved