OFFSET
0,1
FORMULA
a(n)=A112492(n+4, 3)/4, n>=0.
Conjecture: +n*(20*n^2+75*n+67)*a(n) +(2*n+5)*(n+2)*(20*n^2+115*n+162)*a(n-1)=0. - R. J. Mathar, Jul 09 2017
CROSSREFS
KEYWORD
sign,easy
AUTHOR
Wolfdieter Lang, Sep 12 2005
STATUS
approved