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%I #8 Sep 08 2022 08:46:07
%S 1,10,50,500,1250,2500,12500,125000,156250,1562500,1562500,15625000,
%T 39062500,390625000,1953125000,3906250000,2441406250,24414062500,
%U 122070312500,1220703125000,610351562500,6103515625000,30517578125000
%N a(n) = denominators of n!/10^n.
%H Vincenzo Librandi, <a href="/A240534/b240534.txt">Table of n, a(n) for n = 0..200</a>
%t Table[Denominator[n!/10^n], {n, 0, 30}]
%o (Magma) [Denominator(Factorial(n)/10^n): n in [0..30]];
%Y Cf. A000142, A011557, A014973, A074143, A092043, A208529.
%K nonn,frac
%O 0,2
%A _Vincenzo Librandi_, Apr 14 2014