A359148 1, together with numbers k such that A173426(k) is prime.

1, 10, 2446

Offset: 1

Author

N. J. A. Sloane, Feb 17 2023

Keywords

• nonn
• base
• more
• bref
• hard

Comments

Many of the comments following the "Most Wanted Prime" video assumed that A173426(1) was 11, and so "Numbers k such that A173426(k) is prime" should begin 1, 10, 2446, ... This is incorrect, A173426(1) = 1 and is not prime.

However, if the 1 is omitted the sequence is too short to include in the OEIS, so the present sequence will serve as a place-holder until we find the next term.

Its inclusion could also be justified by the OEIS policy of including published but erroneous sequences to serve as pointers to the correct versions.

Serge Batalov comments (see A173426) that a(4) >= 60000.

Links

• Brady Haran and N. J. A. Sloane, Most Wanted Prime, Numberphile video, December 2021.
• Index entries for sequences related to Most Wanted Primes video

Crossrefs

Cf. A173426, A360503.