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 A283843 #12 Mar 29 2017 02:47:34
%S A283843 3,3,5,5,9,13,21,33,61,105,189,345,633,1173,2193,4097,7713,14573,
%T A283843 27597,52433,99881,190653,364725,699073,1342185,2581113,4971069,
%U A283843 9586985,18512793,35791473,69273669,134217729,260301177,505290273,981706833
%N A283843 a(n) = A063776(n) + 1.
%H A283843 Seiichi Manyama, <a href="/A283843/b283843.txt">Table of n, a(n) for n = 1..3333</a>
%H A283843 Juhani Karhumäki, S. Puzynina, M. Rao, M. A. Whiteland, <a href="https://arxiv.org/abs/1605.03319">On cardinalities of k-abelian equivalence classes</a>, arXiv preprint arXiv:1605.03319 [math.CO], 2016.
%t A283843 Table[a=Select[Divisors[n], OddQ[#]&]; 1 + Apply[Plus, 2^(n/a) EulerPhi[a]]/n, {n, 1, 35}] (* _Vincenzo Librandi_, Mar 29 2017 *)
%Y A283843 Cf. A063776.
%K A283843 nonn
%O A283843 1,1
%A A283843 _N. J. A. Sloane_, Mar 28 2017