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 A308574 #8 Jul 02 2019 15:28:56
%S A308574 672,2016,69300,146160,207900,1627920,8316000,9828000,38253600,
%T A308574 60147360,105814800,158004000,726818400,95935039200,191870078400,
%U A308574 2206505901600,3463953292800,3800093497200,4413011803200,7600186994400,8826023606400
%N A308574 Numbers between a pair of consecutive highly abundant numbers (A002093) having the same sum of divisors as the lesser one.
%C A308574 Define "largely abundant numbers" to be numbers k such that sigma(k) >= sigma(j) for all j < k. This sequence gives all the largely abundant numbers that are not highly abundant numbers.
%C A308574 Analogous to A244353 as A002093 is analogous to A002182.
%C A308574 No more terms below 10^10.
%C A308574 a(22) > 10^13. - _Giovanni Resta_, Jul 02 2019
%e A308574 672 is in the sequence since 660 < 672 < 720, (660, 720) are a pair of consecutive highly abundant numbers, and sigma(672) = sigma(660) = 2016.
%t A308574 s={}; sm=0; Do[s1=DivisorSigma[1,n]; If[s1==sm, AppendTo[s,n]]; If[s1>sm, sm=s1], {n,1,10^5}]; s
%Y A308574 Cf. A002093, A002182, A067128, A244353.
%K A308574 nonn,more
%O A308574 1,1
%A A308574 _Amiram Eldar_, Jun 08 2019
%E A308574 a(14)-a(21) from _Giovanni Resta_, Jul 02 2019