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.

A064295 Numbers k such that every (prime) factor of k!+1 is one more than a multiple of k.

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%I A064295 #16 Feb 19 2024 22:53:10
%S A064295 1,2,3,4,5,6,7,10,11,12,25,27,28,37,41,46,73,77,116
%N A064295 Numbers k such that every (prime) factor of k!+1 is one more than a multiple of k.
%C A064295 a(20) >= 140. - _Max Alekseyev_, Feb 19 2024
%H A064295 H. Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/matha1/matha104.htm">Factors of N!+1</a>
%e A064295 46 is in the list because 46!+1 = 47 * 268662306503771535067 * 435777793891607546778854755077304349 and all of those factors are = 1 mod 46.
%Y A064295 Complement of A064164, superset of A002981.
%K A064295 nonn,more
%O A064295 1,2
%A A064295 _Don Reble_, Sep 25 2001
%E A064295 a(19) from _Amiram Eldar_, Oct 03 2019