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 A036178 #15 Jul 08 2025 21:41:21
%S A036178 0,1,72,2,27,73,8,3,62,28,24,74,77,9,17,4,56,63,47,29,80,25,60,75,54,
%T A036178 78,52,10,12,18,38,5,14,57,35,64,20,48,67,30,40,81,71,26,7,61,23,76,
%U A036178 16,55,46,79,59,53,51,11,37,13,34,19,66,39,70,6,22,15,45,58,50,36,33,65,69,21,44,49,32,68,43,31,42,41
%N A036178 Log base 2 (n) mod 83.
%D A036178 I. M. Vinogradov, Elements of Number Theory, p. 225.
%H A036178 I. M. Vinogradov, <a href="https://isidore.co/calibre/get/pdf/4459">Elements of Number Theory</a>, Translation of 5th revised edition, Dover Publications Inc., 1954, p. 225.
%F A036178 Row n=23 of T(n,k) in A054503. - _Georg Fischer_, Jan 19 2020
%p A036178 a:= n-> numtheory[mlog](n, 2, 83):
%p A036178 seq(a(n), n=1..82); # _Alois P. Heinz_, Aug 21 2021
%t A036178 a[1]=0; a[n_]:=MultiplicativeOrder[2, 83, {n}]; Array[a, 82] (* _Vincenzo Librandi_, Apr 04 2020 *)
%Y A036178 Cf. A054503.
%K A036178 nonn,fini,full
%O A036178 1,3
%A A036178 _N. J. A. Sloane_
%E A036178 a(60)-a(82) from _Georg Fischer_, Jan 19 2020