%I A008859
%S A008859 1,2,4,8,16,32,64,127,247,466,848,1486,2510,4096,6476,9949,14893,21778,
%T A008859 31180,43796,60460,82160,110056,145499,190051,245506,313912,397594,
%U A008859 499178,621616,768212,942649,1149017,1391842,1676116,2007328
%N A008859 Sum C(n,k), k=0..6.
%D A008859 L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 72, Problem 2.
%F A008859 a(n)=sum(binomial(n+1, 2k), k=0..3). - Len Smiley (smiley(AT)math.uaa.alaska.edu), 
               Oct 20 2001
%F A008859 O.g.f.: -(1-5*x+11*x^2-13*x^3+9*x^4-3*x^5+x^6)/(-1+x)^7. - R. J. Mathar 
               (mathar(AT)strw.leidenuniv.nl), Apr 02 2008
%Y A008859 Cf. A008860, A008861, A008862, A008863, A006261, A000127.
%Y A008859 Sequence in context: A069050 A059174 A054044 this_sequence A145113 A062257 
               A062258
%Y A008859 Adjacent sequences: A008856 A008857 A008858 this_sequence A008860 A008861 
               A008862
%K A008859 nonn
%O A008859 0,2
%A A008859 N. J. A. Sloane (njas(AT)research.att.com) and R. K. Guy