66026domain: NAppears in sequencesNumbers n such that pi(n) = prime(d_1)*prime(d_2)* ... *prime(d_k), where d_1, d_2, ... d_k is the decimal expansion of n, and the zeroth prime is 1.at n=7A160040Inverse Moebius transform of tribonacci numbers (A000073).at n=20A357238