%I #4 Mar 31 2012 12:35:33
%S 1,2,4,8,16,30,57,109,208,396,757,1448,2767,5295,10143,19435,37268,
%T 71524,137354,263960,507652,977024,1881729,3626858,6995562,13503035,
%U 26083065,50420069,97535756,188815988,365785497,709127834,1375721062,2670799255
%N Number of binary strings of length n with equal numbers of 00000 and 10101 substrings
%H R. H. Hardin, <a href="/A164189/b164189.txt">Table of n, a(n) for n=0..500</a>
%K nonn
%O 0,2
%A _R. H. Hardin_ Aug 11 2009