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 A147522 #11 Jun 09 2025 22:41:13
%S A147522 1,1,43,6893,1757233,563636267,209420753,478130829203,68506995922171,
%T A147522 245296117830341,107670977147002963,4137830996824703141,
%U A147522 16215855859012574521,3891295582697539371727,20259360308241533953897,3150687184319350782852593,574603643148719626677940181
%N A147522 Minimal number such that a(n)*41^n is of the form x^2 + x + 41.
%C A147522 For values x see A147520. For x^2 + x + 41 values see A147521.
%t A147522 a = {}; Do[x = 0; While[Mod[x^2 + x + 41, 41^n] != 0, x++ ]; AppendTo[a,(x^2 + x + 41)/41^n];Print[{n, x, x^2 + x + 41, (x^2 + x + 41)/41^n}], {n, 1, 6}]; a
%Y A147522 Cf. A145292, A145293, A145294, A147520, A147521, A147522.
%K A147522 nonn
%O A147522 1,3
%A A147522 _Artur Jasinski_, Nov 06 2008
%E A147522 a(7)-a(17) from _Hugo Pfoertner_, Jan 12 2019