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 A244841 #14 Jun 14 2025 07:13:39
%S A244841 6,36,780,14196,4017156,65514540,17050729020,273715645476,
%T A244841 70274600998836,288161745774346860,4611068345031103956,
%U A244841 18889015647572689857420,4835666805462139528038300,77370924198368872644117636,19807014039751725440882699796
%N A244841 4^p - 3^p - 1, where p is prime.
%C A244841 For p>3, all terms are divisible by 13.
%H A244841 Vincenzo Librandi, <a href="/A244841/b244841.txt">Table of n, a(n) for n = 1..250</a>
%t A244841 Table[(4^Prime[n] - 3^Prime[n] - 1), {n, 1, 30}]
%o A244841 (Magma) [4^p-3^p-1: p in PrimesUpTo(60)];
%Y A244841 Cf. A242083, A242084.
%K A244841 nonn
%O A244841 1,1
%A A244841 _Vincenzo Librandi_, Jul 07 2014