Search: id:A135420
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%I A135420
%S A135420 1,20,10000,125000000,39062500000000,305175781250000000000,
%T A135420 59604644775390625000000000000,291038304567337036132812500000000000000,
%U A135420 35527136788005009293556213378906250000000000000000
%N A135420 4^n*5^(n^2).
%C A135420 Hankel transform of A132864 .
%F A135420 a(n)=4^n*5^(n^2)=A000302(n)*A060758(n).
%Y A135420 Sequence in context: A135292 A013725 A109122 this_sequence A045811 A086687 
               A028667
%Y A135420 Adjacent sequences: A135417 A135418 A135419 this_sequence A135421 A135422 
               A135423
%K A135420 nonn
%O A135420 0,2
%A A135420 Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 11 2007

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