83119domain: NAppears in sequencesStrong pseudoprimes to base 10.at n=13A020236Strong pseudoprimes to base 58.at n=32A020284G.f.: 1/(1-2*x+2*x^2-x^3+x^4).at n=41A199802Trisection 2 of A199802.at n=13A199929