752911domain: NPropertiesPrimalityPrimeyesAppears in sequencesSequence 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)=1, k=-2 and l=0.at n=15A177111Prime numbersat n=60460