%I A056449
%S A056449 3,3,9,9,27,27,81,81,243,243,729,729,2187,2187,6561,6561,19683,19683,
%T A056449 59049,59049,177147,177147,531441,531441,1594323,1594323,4782969,
%U A056449 4782969,14348907,14348907,43046721,43046721,129140163,129140163
%N A056449 3^[(n+1)/2].
%C A056449 Powers of 3 with positive exponent, repeated. [From Omar E. Pol (info(AT)polprimos.com), 
               Jul 27 2009]
%D A056449 M. R. Nester (1999). Mathematical investigations of some plant interaction 
               designs. PhD Thesis. University of Queensland, Brisbane, Australia.
%F A056449 3^[n/2].
%Y A056449 Cf. A000244, A016116. Essentially a duplicate of A108411.
%Y A056449 Sequence in context: A145957 A128019 A108411 this_sequence A162436 A146788 
               A147244
%Y A056449 Adjacent sequences: A056446 A056447 A056448 this_sequence A056450 A056451 
               A056452
%K A056449 nonn
%O A056449 1,1
%A A056449 Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
%E A056449 Edited by N. J. A. Sloane, Jul 03 2009 at the suggestion of Klaus Brockhaus.