OFFSET
1,1
COMMENTS
Column 1 of A200777
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Conjecture: (n+2)*(2270*n-4893)*a(n) +3*(1090*n^2-4919*n+1654)*a(n-1) +4686*a(n-2) +2*(-5540*n^2+7016*n+17127)*a(n-3) -6*(1090*n-2739)*(2*n-7)*a(n-4)=0. - R. J. Mathar, Nov 23 2011
EXAMPLE
All solutions for n=4
..0....0....0....0....0....0....0
..0....2....0....1....1....1....2
..1....1....2....2....2....1....1
..2....2....1....2....1....2....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 22 2011
STATUS
approved