Search: id:A147691
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%I A147691
%S A147691 0,1,9,34,91,192,353,584,903,1318,1849,2502,3299,4244,5361,6652,8143,
%T A147691 9834,11753,13898,16299,18952,21889,25104,28631,32462,36633,41134,46003,
%U A147691 51228,56849,62852,69279,76114,83401,91122,99323,107984,117153,126808
%N A147691 G.f.: x(1+x+x^2)(1+6x+8x^2+4x^3-x^4)/((1+x)^2*(1-x)^4).
%C A147691 The inverse Motzkin transform of A057586, which means that the substitution 
               x->x*A001006(x) for the independent variable in the g.f. yields the 
               g.f. of A057586.
%H A147691 <a href="Sindx_Rea.html#recLCC">Index entries for sequences related to 
               linear recurrences with constant coefficients</a>
%F A147691 a(n) = 2*a(n-1) +a(n-2) -4*a(n-3) +a(n-4) +2*a(n-5) -a(n-6), n> 7.
%Y A147691 Sequence in context: A100179 A106598 A014816 this_sequence A000441 A067989 
               A002881
%Y A147691 Adjacent sequences: A147688 A147689 A147690 this_sequence A147692 A147693 
               A147694
%K A147691 nonn
%O A147691 0,3
%A A147691 R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 10 2008

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