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 A036173 #16 Jul 08 2025 21:40:55
%S A036173 0,1,6,2,22,7,49,3,12,23,15,8,40,50,28,4,47,13,26,24,55,16,57,9,44,41,
%T A036173 18,51,35,29,59,5,21,48,11,14,39,27,46,25,54,56,43,17,34,58,20,10,38,
%U A036173 45,53,42,33,19,37,52,32,36,31,30
%N A036173 Log base 2 (n) mod 61.
%D A036173 I. M. Vinogradov, Elements of Number Theory, p. 223.
%H A036173 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.
%F A036173 Row n=18 of T(n,k) in A054503. - _Georg Fischer_, Jan 19 2020
%p A036173 a:= n-> numtheory[mlog](n, 2, 61):
%p A036173 seq(a(n), n=1..60); # _Alois P. Heinz_, Aug 21 2021
%t A036173 a[1]=0; a[n_]:=MultiplicativeOrder[2, 61, {n}]; Array[a, 60] (* _Vincenzo Librandi_, Mar 12 2020 *)
%Y A036173 Cf. A054503.
%K A036173 nonn,fini,full
%O A036173 1,3
%A A036173 _N. J. A. Sloane_
%E A036173 a(59)-a(60) from _Georg Fischer_, Jan 19 2020