cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A085682 Numbers k such that k^k - (k-1)^k is prime.

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%I A085682 #12 Dec 07 2024 02:02:53
%S A085682 2,3,7,43,79,463,1277
%N A085682 Numbers k such that k^k - (k-1)^k is prime.
%C A085682 Each term of the sequence must be prime.
%C A085682 a(8) > 30000. - _Michael S. Branicky_, Dec 06 2024
%H A085682 C. Rivera, <a href="https://www.primepuzzles.net/puzzles/puzz_185.htm">Puzzle 185</a>
%e A085682 7 is in the sequence because 7^7 - 6^7 = 543607 is prime.
%o A085682 (PARI) isok(k) = ispseudoprime(k^k - (k-1)^k); \\ _Jinyuan Wang_, Mar 19 2020
%Y A085682 Cf. A072164, A072179, A073499.
%K A085682 nonn,more
%O A085682 1,1
%A A085682 _Farideh Firoozbakht_, Jul 17 2003