%I A001445
%S A001445 3,5,10,18,36,68,136,264,528,1040,2080,4128,8256,16448,
%T A001445 32896,65664,131328,262400,524800,1049088,2098176,4195328,
%U A001445 8390656,16779264,33558528,67112960,134225920,268443648
%N A001445 (2^n + 2^[ n/2 ] )/2.
%C A001445 a(n) is union of A007582(n-1) and A164051(n). [From Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), 
               Aug 14 2009]
%F A001445 G.f.: x^2[3-x-6x^2]/[(1-2x)(1-2x^2)].
%p A001445 f := n->(2^n+2^floor(n/2))/2;
%Y A001445 Equals (1/2) A005418(n+2). Cf. A056309, A052957.
%Y A001445 Sequence in context: A154949 A107232 A134522 this_sequence A125750 A018168 
               A084321
%Y A001445 Adjacent sequences: A001442 A001443 A001444 this_sequence A001446 A001447 
               A001448
%K A001445 nonn
%O A001445 2,1
%A A001445 N. J. A. Sloane (njas(AT)research.att.com).