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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.

A181806 Positive integers with more highly composite divisors (A002182) than any smaller positive integer.

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%I A181806 #17 Feb 16 2025 08:33:13
%S A181806 1,2,4,12,24,48,120,240,360,720,5040,10080,15120,30240,60480,151200,
%T A181806 166320,332640,665280,1663200,1995840,3326400,8648640,17297280,
%U A181806 21621600,43243200,86486400,129729600,259459200,735134400
%N A181806 Positive integers with more highly composite divisors (A002182) than any smaller positive integer.
%C A181806 Numbers n such that A181801(n) > A181801(m) for all m < n. Also, numbers n such that row n of triangles A181802 and A181803 is longer than any previous row in either triangle.
%C A181806 Not a subsequence of A002182. The smallest positive integer which has a record number of highly composite divisors, but which is not highly composite itself, is 30240.
%H A181806 Charles R Greathouse IV, <a href="/A181806/b181806.txt">Table of n, a(n) for n = 1..153</a>
%H A181806 A. Flammenkamp, <a href="http://wwwhomes.uni-bielefeld.de/achim/highly.txt">List of the first 1200 highly composite numbers</a>
%H A181806 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HighlyCompositeNumber.html">Highly composite number</a>
%e A181806 12 has five divisors (namely, 1, 2, 4, 6 and 12) that are members of A002182. No positive integer smaller than 12 has more than three members of A002182 among its divisors; hence, 12 is a member of the sequence.
%Y A181806 A181807(n) = number of highly composite divisors of a(n) (i.e., A181801(a(n))).
%Y A181806 Subsequence of A025487, A181804. Numbers A181804(n) such that A181805(n) increases to a record.
%Y A181806 Includes all members of A136253.
%K A181806 nonn
%O A181806 1,2
%A A181806 _Matthew Vandermast_, Nov 27 2010
%E A181806 a(20)-a(30) from _Charles R Greathouse IV_, Jan 14 2011