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.
%I A103857 #22 Apr 17 2025 08:08:57 %S A103857 1,1,13,4831,10867,380879,67872713,29248641596329,5375659901, %T A103857 2260742008115495258127626261,39302553278734052383226897, %U A103857 2202226772995090243,363934772650919,125129894757902719183,1330939456978870860802004244587 %N A103857 Greatest prime factor of prime(n)! - prime(n)# + 1. %H A103857 Amiram Eldar, <a href="/A103857/b103857.txt">Table of n, a(n) for n = 1..26</a> %H A103857 Reinhard Zumkeller, <a href="/A103855/a103855.txt">p(n)! - p(n)# + 1</a>. %F A103857 a(n) = A006530(A103855(n)). %Y A103857 Cf. A006530, A103855, A103856, A103892. %K A103857 nonn %O A103857 1,3 %A A103857 _Reinhard Zumkeller_, Feb 20 2005