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%I A164175 #11 Oct 23 2017 14:42:45
%S A164175 1,2,4,8,14,24,44,84,160,304,582,1124,2180,4236,8248,16096,31468,
%T A164175 61600,120712,236776,464832,913216,1795270,3531324,6949852,13684364,
%U A164175 26956792,53124240,104733796,206557360,407516744,804254360,1587733632,3135392096
%N A164175 Number of binary strings of length n with equal numbers of 0011 and 1100 substrings.
%H A164175 R. H. Hardin, Table of n, a(n) for n=0..500
%H A164175 Shalosh B. Ekhad and Doron Zeilberger, Automatic Solution of Richard Stanley's Amer. Math. Monthly Problem #11610 and ANY Problem of That Type, arXiv preprint arXiv:1112.6207, 2011. See subpages for rigorous derivations of g.f., recurrence, asymptotics for this sequence. [From _N. J. A. Sloane_, Apr 07 2012]
%K A164175 nonn
%O A164175 0,2
%A A164175 _R. H. Hardin_, Aug 11 2009
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