OFFSET
0,2
FORMULA
Conjecture: (891*n+6824)*(n+7)*a(n) +(891*n^2-38453*n-250970)*a(n-1) +4*(-5040*n^2-4271*n+8095)*a(n-2) +4*(1170*n+3847)*(2*n-1)*a(n-3)=0. - R. J. Mathar, Aug 25 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 06 2002
STATUS
approved