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 A204768 #18 Aug 17 2024 15:48:30
%S A204768 12,126,9030,543606,1614529686,83828316390,215703854542470,
%T A204768 10789535445362646,26579017117027313526,3183060102526390833854310,
%U A204768 156448938516521406467644086,18500229372226631089176131976870
%N A204768 7^p - 6^p - 1, with p = prime(n).
%C A204768 For n>2 all terms are divisible by 1806 = 2*3*7*43.
%H A204768 Vincenzo Librandi, <a href="/A204768/b204768.txt">Table of n, a(n) for n = 1..100</a>
%t A204768 Table[(7^Prime[n] - 6^Prime[n] - 1), {n, 1, 20}] (* _Vincenzo Librandi_, May 04 2014 *)
%t A204768 7^#-6^#-1&/@Prime[Range[20]] (* _Harvey P. Dale_, Aug 17 2024 *)
%o A204768 (Magma) [(7^p-6^p-1): p in PrimesUpTo(100)];
%Y A204768 Cf. A016169.
%K A204768 nonn
%O A204768 1,1
%A A204768 _Vincenzo Librandi_, Mar 07 2012