64972domain: NAppears in sequencesNumbers n such that A078142(n) = A078142(n+1) = A078142(n+2), where A078142(n) is the sum of the differences of the distinct prime factors p of n and the next square larger than p.at n=19A073938Numbers k such that the sum of the divisors of 2*k^2 is a square.at n=12A097023