cp's OEIS Frontend

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.

A072938 Highly composite numbers that are half of the next highly composite number.

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%I A072938 #20 Aug 10 2022 09:55:37
%S A072938 1,2,6,12,60,360,2520
%N A072938 Highly composite numbers that are half of the next highly composite number.
%C A072938 A002182(k) such that A002182(k+1) = 2*A002182(k).
%C A072938 Numbers m such that d(m)>=d(k) for 0<k<2m {d(n) being the number of divisors function: A000005(n)}. - _Lekraj Beedassy_, Dec 16 2004
%C A072938 W. Brefeld (cf. link) gives a proof that there are no other terms. - _Klaus Brockhaus_, Mar 05 2006
%H A072938 Werner Brefeld, <a href="http://www.brefeld.homepage.t-online.de/teilbarkeit.html">Ramanujan, zusammengesetzte Zahlen und ihre Teilbarkeit</a>.
%H A072938 Achim Flammenkamp, <a href="https://web.archive.org/web/20160304030655/http://wwwhomes.uni-bielefeld.de/achim/highly.html">Highly Composite Numbers</a>.
%e A072938 6 = A002182(4) is a term since A002182(5) = 12 = 2*6.
%Y A072938 Cf. A002110, A002182, A002201, A003418, A094348, A106037, A165412.
%K A072938 nonn,fini,full
%O A072938 1,2
%A A072938 Anonymous, Aug 12 2002
%E A072938 Edited by _Klaus Brockhaus_, Aug 13 2002