The smallest number such that n or more positive numbers k exist such that a(n) - k = sopfr(a(n) + k), where sopfr(m) is the sum of the primes dividing m, with repetition.

A369355

The smallest number such that n or more positive numbers k exist such that a(n) - k = sopfr(a(n) + k), where sopfr(m) is the sum of the primes dividing m, with repetition.

Terms

    a(0) =7a(1) =38a(2) =88a(3) =348a(4) =636a(5) =1032a(6) =3828a(7) =3900a(8) =10632a(9) =16428a(10) =16428a(11) =16428a(12) =44652a(13) =533868a(14) =533868a(15) =533868a(16) =533868a(17) =1182432a(18) =5218548a(19) =7741068a(20) =7741068a(21) =7741068a(22) =33764268a(23) =43777068a(24) =67398582a(25) =70249668a(26) =180911982a(27) =180911982a(28) =180911982a(29) =387668532

External references