93870domain: NAppears in sequencesRow sums in A083175.at n=34A083175Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives y numbers.at n=19A125491a(n) = prime(n)*T(n), where T = A000217.at n=34A196421