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 A295991 #10 Dec 06 2017 04:57:18
%S A295991 1107,1268,2036,2163,2403,2451,2612,3075,3284,3411,3698,4052,4388,
%T A295991 4772,4868,5156,5715,6212,6452,6771,6788,7011,7155,8547,8612,8643,
%U A295991 8948,9092,9124,10227,11204,11444,11636,11811,13652,13778,14067,14324,14547,17043,17427,18818,18915,19892
%N A295991 Numbers n such that there are precisely 5 groups of orders n and n + 1.
%C A295991 Equivalently, lower member of consecutive terms of A054397.
%H A295991 Muniru A Asiru, <a href="/A295991/b295991.txt">Table of n, a(n) for n = 1..103</a>
%H A295991 H. U. Besche, B. Eick and E. A. O'Brien. <a href="http://dx.doi.org/10.1142/S0218196702001115">A Millennium Project: Constructing Small Groups</a>, Internat. J. Algebra and Computation, 12 (2002), 623-644.
%H A295991 Gordon Royle, <a href="http://staffhome.ecm.uwa.edu.au/~00013890/remote/cubcay/">Numbers of Small Groups</a>
%H A295991 <a href="/index/Gre#groups">Index entries for sequences related to groups</a>
%F A295991 Sequence is { n | A000001(n) = 5, A000001(n+1) = 5 }.
%e A295991 1107 is in the sequence because A000001(1107) = A000001(1108) = 5, 1268 is in the sequence because A000001(1268) = A000001(1269) = 5 and 2163 is in the sequence because A000001(2163) = A000001(2164) = 5.
%Y A295991 Cf. A000001, A054397.
%K A295991 nonn
%O A295991 1,1
%A A295991 _Muniru A Asiru_, Dec 02 2017