Search: id:A052203
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%I A052203
%S A052203 1,5,36,286,2380,20349,177100,1560780,13884156,124403620,1121099408,
%T A052203 10150595910,92263734836,841392966470,7694644696200,70539987842520,
%U A052203 648045936942300,5964720367660956,54991682779774384,507749884105448600
%N A052203 a(n)=(4n+1)*binomial(4n,n)/(3n+1).
%C A052203 Central terms of the triangle in A122366. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), 
               Aug 30 2006
%F A052203 a(n)=C(4n+1, n); a(n) is asymptotic to c/sqrt(n)*(256/27)^n with c=0.614... 
               - Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 27 2003
%Y A052203 Cf. A002293 and A051944.
%Y A052203 Sequence in context: A098305 A055270 A164110 this_sequence A027331 A091161 
               A135149
%Y A052203 Adjacent sequences: A052200 A052201 A052202 this_sequence A052204 A052205 
               A052206
%K A052203 easy,nonn
%O A052203 0,2
%A A052203 Barry E. Williams, Jan 28 2000
%E A052203 More terms from James A. Sellers (sellersj(AT)math.psu.edu), Jan 31 2000

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