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 A297967 #12 Sep 08 2022 08:46:20 %S A297967 1,1,0,2,1,12,10,4,11,20,25,10,39,36,41,13,36,58,52,1,17,26,19,64,13, %T A297967 5,94,14,25,36,40,74,117,81,6,123,24,155,134,117,20,42,69,36,185,111, %U A297967 121,16,206,159,42,220,47,123,130,61,57,83,6,79,270,14,91 %N A297967 a(n) = 5^n mod prime(n). %H A297967 Vincenzo Librandi, <a href="/A297967/b297967.txt">Table of n, a(n) for n = 1..5000</a> %F A297967 a(n) = A000351(n) mod A000040(n). %t A297967 Array[PowerMod[5, #, Prime@#]&, 80] %o A297967 (Magma) [Modexp(5, n, NthPrime(n)): n in [1..80]]; %Y A297967 Cf. A000040, A000351, A064367, A066603, A297966. %K A297967 nonn %O A297967 1,4 %A A297967 _Vincenzo Librandi_, Jan 15 2018