%I A133464
%S A133464 1,2,3,4,8,12,16,32,48,64,128,192,256,512,768,1024,2048,3072,4096,8192,
%T A133464 12288,16384,32768,49152,65536,131072,196608,262144,524288,786432,
%U A133464 1048576,2097152,3145728,4194304,8388608,12582912,16777216,33554432
%N A133464 a(3n)=4^n, a(3n+1)=2*4^n, a(3n+2)=3*4^n.
%C A133464 a(n) = A140740(n+3,3). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), 
               May 26 2008
%F A133464 O.g.f.: -(1+2*x+3*x^2)/(-1+4*x^3) . 2*a(n)-a(n+1) = abs(A117902(n+1)). 
               - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 30 2007
%F A133464 a(n+1) = a(n) + a(n - n mod 3). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), 
               May 26 2008
%Y A133464 Cf. A000079, A038754, A140730, A037124.
%Y A133464 Sequence in context: A030073 A115271 A062923 this_sequence A085635 A013914 
               A060200
%Y A133464 Adjacent sequences: A133461 A133462 A133463 this_sequence A133465 A133466 
               A133467
%K A133464 nonn
%O A133464 0,2
%A A133464 Paul Curtz (bpcrtz(AT)free.fr), Nov 28 2007
%E A133464 Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 30 2007
%E A133464 More terms from Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), 
               May 26 2008