OFFSET
1,1
COMMENTS
Column 3 of A219173
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1/3487131648000)*n^16 - (1/163459296000)*n^15 + (1/174356582400)*n^14 + (107/9340531200)*n^13 - (4799/19160064000)*n^12 + (2117/449064000)*n^11 - (8749/406425600)*n^10 + (6127/228614400)*n^9 + (83683631/24385536000)*n^8 + (8015627/163296000)*n^7 - (1747104083/958003200)*n^6 + (19176515419/718502400)*n^5 - (45857964298051/217945728000)*n^4 + (9130419742127/9081072000)*n^3 - (856729430749/302702400)*n^2 + (311014261/72072)*n - 2697 for n>6
EXAMPLE
Some solutions for n=3
..1..0..2....1..1..2....0..0..0....0..0..0....1..1..2....0..0..1....1..0..0
..0..0..0....1..1..2....0..0..2....0..0..0....1..1..2....0..0..1....0..0..0
..2..0..1....1..2..2....2..2..2....1..0..0....1..1..1....0..0..1....0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 13 2012
STATUS
approved