%I #4 Mar 31 2012 12:35:33
%S 1,2,4,8,16,30,57,108,209,403,777,1490,2863,5508,10620,20473,39472,
%T 76108,146873,283637,548101,1059573,2049320,3965725,7678931,14877381,
%U 28839531,55934330,108544038,210753678,409436442,795857215,1547813186,3011866617
%N Number of binary strings of length n with equal numbers of 00000 and 00100 substrings
%H R. H. Hardin, <a href="/A164181/b164181.txt">Table of n, a(n) for n=0..500</a>
%K nonn
%O 0,2
%A _R. H. Hardin_ Aug 11 2009