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 A274357 #9 Sep 07 2021 12:32:38
%S A274357 104,135,189,230,231,285,296,344,374,375,429,434,609,645,663,664,741,
%T A274357 776,782,805,874,902,903,969,986,1001,1015,1022,1029,1065,1085,1095,
%U A274357 1105,1106,1112,1130,1161,1208,1221,1245,1265,1269,1309,1310,1334,1335,1374,1406,1431
%N A274357 Numbers n such that n and n+1 both have 8 divisors.
%H A274357 Charles R Greathouse IV, <a href="/A274357/b274357.txt">Table of n, a(n) for n = 1..10000</a>
%t A274357 SequencePosition[DivisorSigma[0,Range[2000]],{8,8}][[All,1]] (* _Harvey P. Dale_, Sep 07 2021 *)
%o A274357 (PARI) is(n)=numdiv(n)==8 && numdiv(n+1)==8
%Y A274357 Intersection of A005237 and A030626.
%Y A274357 Numbers n such that n and n+1 both have k divisors: A039832 (k=4), A049103 (k=6), A274357 (k=8), A215197 (k=10), A174456 (k=12), A274358 (k=14), A274359 (k=16), A274360 (k=18), A274361 (k=20), A274366 (k=22), A274362 (k=24), A274363 (k=26), A274364 (k=28), A274365 (k=30).
%Y A274357 Cf. A000005.
%K A274357 nonn
%O A274357 1,1
%A A274357 _Charles R Greathouse IV_, Jun 19 2016