A378313 Numbers m such that such that Sum_{i=1..k} A027750(m,i)^i = m for some k <= A000005(m).

1, 130, 135, 288, 5083, 8064, 10130, 374057639685, 3138436947541900183, 5386775810449231243, 74220449392444960903, 153525475816743446263, 1388286039882808958923, 8020029492466254993943, 8756593744534084572523, 16468366959402667137403

Offset: 1

Author

Max Alekseyev, Nov 22 2024

Keywords

• nonn
• hard

Comments

There are many terms of the form 1 + p^2 + q^3 with primes p < q. Next known term not of this form is 1254382690393861635950014154836028.

Crossrefs

Cf. A001248, A027750, A064510, A180851, A190940, A194269, A307137, A378314.