OFFSET
0,3
COMMENTS
FORMULA
a(n) +(-2*n-3)*a(n-1) +(4*n-1)*a(n-2) +(-2*n+3)*a(n-3)=0. - R. J. Mathar, Oct 28 2014
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
M. F. Hasler, Oct 26 2014
STATUS
approved