41679domain: NAppears in sequencesPisot sequence L(4,10).at n=10A020734Numbers n such that n*6^n - 1 is prime.at n=19A059675Numbers generated by recursive procedure a(n) = nozero(a(n-1) * 3), in which the function nozero(x) removes all zeros from x, starting with a(1) = 1.at n=30A243845