a(n) = the smallest number m such that gcd(sigma(m), pod(m)) = n where sigma(k) = the sum of the divisors of k (A000203) and pod(k) = the product of the divisors of k (A007955).

A324527

a(n) = the smallest number m such that gcd(sigma(m), pod(m)) = n where sigma(k) = the sum of the divisors of k (A000203) and pod(k) = the product of the divisors of k (A007955).

Terms

    a(0) =1a(1) =10a(2) =15a(3) =12a(4) =95a(5) =180a(6) =91a(7) =56a(8) =51a(9) =40a(10) =473a(11) =6a(12) =117a(13) =980a(14) =135a(15) =70a(16) =1139a(17) =90a(18) =703a(19) =290a(20) =861a(21) =26378a(22) =3151a(23) =54a(24) =745a(25) =468a(26) =255a(27) =2156a(28) =5017a(29) =26100

External references