168093domain: NAppears in sequencesNumbers k such that 243*2^k+1 is prime.at n=30A032498G.f.: exp( Sum_{n>=1} A005063(n)*x^n/n ), where A005063(n) = sum of squares of primes dividing n.at n=32A219224Numbers k such that 7*k+1 divides 7^k+1.at n=9A381258