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 A054714 #9 Aug 25 2024 10:00:38
%S A054714 1,2,2,3,2,3,2,4,6,3,5,4,1,2,2,5,16,7,18,4,3,6,22,5,10,2,18,3,28,3,15,
%T A054714 6,10,17,3,8,12,19,2,5,8,3,21,7,6,23,23,6,3,11,16,3,52,19,10,4,18,29,
%U A054714 58,4,6,16,7,7,2,11,11,18,22,3,10,9,72,13,10,20,6,3,26,6,54,9,82,4,16
%N A054714 Number of powers of 14 modulo n.
%H A054714 Amiram Eldar, <a href="/A054714/b054714.txt">Table of n, a(n) for n = 1..10000</a>
%t A054714 a[n_] := Module[{e = IntegerExponent[n, {2, 7}]}, Max[e] + MultiplicativeOrder[14, n/Times @@ ({2, 7}^e)]]; Array[a, 100] (* _Amiram Eldar_, Aug 25 2024 *)
%Y A054714 Cf. A054703 (base 2), A054704 (3), A054705 (4), A054706 (5), A054707 (6), A054708 (7), A054709 (8), A054717 (9), A054710 (10), A351524 (11), A054712 (12), A054713 (13), A054715 (15), A054716 (16).
%K A054714 easy,nonn
%O A054714 1,2
%A A054714 _Henry Bottomley_, Apr 20 2000