Search: id:A072938
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%I A072938
%S A072938 1,2,6,12,60,360,2520
%N A072938 Highly composite numbers which 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 (blekraj(AT)yahoo.com), Dec 
               16 2004
%C A072938 W. Brefeld (cf. link) gives a proof that there are no other terms. - 
               Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), 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="http://www.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. A002182, A002201, A106037, A094348, A003418, A002110.
%Y A072938 Sequence in context: A104350 A072489 A072487 this_sequence A160274 A048803 
               A068625
%Y A072938 Adjacent sequences: A072935 A072936 A072937 this_sequence A072939 A072940 
               A072941
%K A072938 nonn,fini,full
%O A072938 1,2
%A A072938 Anon, Aug 12, 2002
%E A072938 Edited by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Aug 13 2002

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