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%I #16 Sep 08 2022 08:46:01
%S 12,126,9030,543606,1614529686,83828316390,215703854542470,
%T 10789535445362646,26579017117027313526,3183060102526390833854310,
%U 156448938516521406467644086,18500229372226631089176131976870
%N 7^p - 6^p - 1, with p = prime(n).
%C For n>2 all terms are divisible by 1806 = 2*3*7*43.
%H Vincenzo Librandi, <a href="/A204768/b204768.txt">Table of n, a(n) for n = 1..100</a>
%t Table[(7^Prime[n] - 6^Prime[n] - 1), {n, 1, 20}] (* _Vincenzo Librandi_, May 04 2014 *)
%o (Magma) [(7^p-6^p-1): p in PrimesUpTo(100)];
%Y Cf. A016169.
%K nonn
%O 1,1
%A _Vincenzo Librandi_, Mar 07 2012
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