92983domain: NAppears in sequencesExpansion of (1-x)/(1+x+2*x^2-x^3).at n=25A078049Products p*q*r of three distinct primes such that s=(p*q) mod r, t=(p*r) mod q and u=(q*r) mod p, and s+t+u are all prime.at n=16A338705