92663domain: NAppears in sequencesInterprimes which are of the form s*prime, s=19.at n=27A075294Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=0, k=1 and l=1.at n=11A176610a(n) = (A259756(n)-1)/8.at n=9A275417