Search: id:A132686
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%I A132686
%S A132686 1,5,36,455,12650,962598,237093780,209004408899,689960224294614,
%T A132686 8639439963148103450,409865407260324119340236,
%U A132686 73328394245057556170201283726,49287010273876375495535472789937580
%N A132686 a(n) = C(2^n + 2*n + 1, n).
%F A132686 a(n) = [x^n] 1/(1-x)^(2^n + n + 2).
%o A132686 (PARI) a(n)=binomial(2^n+2*n+1,n)
%Y A132686 Cf. A132685.
%Y A132686 Sequence in context: A081918 A062024 A031971 this_sequence A118018 A156355 
               A002666
%Y A132686 Adjacent sequences: A132683 A132684 A132685 this_sequence A132687 A132688 
               A132689
%K A132686 nonn
%O A132686 0,2
%A A132686 Paul D. Hanna (pauldhanna(AT)juno.com), Aug 26 2007

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