Search: id:A061984
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%I A061984
%S A061984 0,1,2,3,4,4,6,6,7,8,8,8,11,11,11,11,12,12,15,15,15,15,15,15,19,19,19,
%T A061984 20,20,20,20,20,21,21,21,21,27,27,27,27,27,27,27,27,27,27,27,27,32,32,
%U A061984 32,32,32,32,36,36,36,36,36,36,36,36,36,36,37,37,37,37,37,37,37,37,47
%N A061984 a(n) = 1 + a([n/2]) + a([n/3]) with a(0) = 0.
%C A061984 If n = 2^a*3^b, then a(n)-a(n-1) = C(a+b, a). - David Wasserman (wasserma(AT)spawar.navy.mil), 
               Nov 17 2005
%Y A061984 Cf. A061980, A061985, A061986, A061987.
%Y A061984 Sequence in context: A162684 A145340 A160680 this_sequence A063208 A092988 
               A138768
%Y A061984 Adjacent sequences: A061981 A061982 A061983 this_sequence A061985 A061986 
               A061987
%K A061984 nonn
%O A061984 0,3
%A A061984 Henry Bottomley (se16(AT)btinternet.com), May 24 2001

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