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%I #8 Jan 27 2014 09:20:22
%S 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
%T 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
%U 1,1,1,1,1,1,1,5,5,5,5,1,5,5,5,1,1,5,5,1,1,1,5,1,1,1,1,5,5,5,5,5,25,25,25
%N Denominator of a remarkable product.
%C There seems to be no other denominators than 1 or 5^k.
%C The first 5^k terms appear respectively at positions {76,101,1351,4476,7601,...}
%H Olivier Gérard, <a href="/A133707/b133707.txt">Table of n, a(n) for n = 1..10001</a>
%F a(n) = Product( (394-225 i+85 i^2 -15 i^3+i^4)/120, i=1..n-1 )
%Y Sequence of numerators is in A133706.
%K nonn,frac
%O 1,76
%A _Olivier Gérard_, Sep 20, 2007
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