293763domain: NAppears in sequencesNumbers n such that max(tau(n),tau(n+1),tau(n+2))- min(tau(n),tau(n+1),tau(n+2)) = 1.at n=36A173149Numbers m such that tau(m) = tau(m + 1) - 1 = tau(m + 2), where tau(k) = the number of divisors of k (A000005).at n=2A339776Numbers k such that A011776(k) = A011776(k+1).at n=25A373725