Since 12407 = 19*653, it is a semiprime and hence is a member of http://oeis.org/A001358 On Sun, Nov 13, 2011 at 11:46 AM, RGWv <rgwv at rgwv.com> wrote: > Maybe 12407 does not appear, yet, but -12407 does in A160077 Numerator > of Hermite(n, 19/26). > >