OFFSET
1,1
COMMENTS
Column 7 of A224262
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (118519/21794572800)*n^14 + (2257/124540416)*n^13 + (11489/13305600)*n^12 + (227251/47900160)*n^11 + (39637/777600)*n^10 + (458077/1451520)*n^9 + (169757921/76204800)*n^8 + (6354631/870912)*n^7 + (526598447/7257600)*n^6 + (85059797/2177280)*n^5 + (6141145069/8553600)*n^4 - (2165544719/1995840)*n^3 - (174076430267/75675600)*n^2 - (921446093/36036)*n + 109916 for n>8
EXAMPLE
Some solutions for n=3
..0..0..2..2..1..0..0....0..0..1..1..0..0..0....0..1..1..1..1..2..1
..1..2..2..2..2..1..0....0..1..1..1..1..1..0....1..2..2..2..2..2..2
..2..2..2..2..2..2..1....2..2..2..2..2..2..1....1..2..2..2..2..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 02 2013
STATUS
approved