OFFSET
1,1
COMMENTS
Column 5 of A219291
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1/731867136000)*n^17 - (1/5419008000)*n^16 + (503/36324288000)*n^15 - (2087/3321077760)*n^14 + (4063429/249080832000)*n^13 - (230903/4257792000)*n^12 - (1001500007/67060224000)*n^11 + (582506191/812851200)*n^10 - (154575523979/8128512000)*n^9 + (754768201963/2322432000)*n^8 - (31748696208149/9580032000)*n^7 + (147171415529/19353600)*n^6 + (77810053798256237/217945728000)*n^5 - (73876088160824137/11176704000)*n^4 + (1127005910876695111/18162144000)*n^3 - (10107497533814981/28828800)*n^2 + (1989207040361119/1750320)*n - 1636876189 for n>14
EXAMPLE
Some solutions for n=3
..0..0..0..0..0....0..0..0..0..1....0..0..1..1..1....0..0..1..1..1
..0..0..0..0..0....0..0..0..0..0....0..0..0..1..1....0..0..0..1..1
..1..1..1..1..0....1..1..0..0..1....0..0..0..0..1....1..0..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 17 2012
STATUS
approved