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%I #17 Sep 06 2014 00:49:06
%S 0,5,15,30,50,100,130,165,205,250,350,405,465,530,600,750,830,915,
%T 1005,1100,1300,1405,1515,1630,1750,2125,2255,2390,2530,2675,2975,
%U 3130,3290,3455,3625,3975,4155,4340,4530,4725,5125,5330,5540,5755,5975,6425,6655
%N Possible number of trailing zeros in hyperfactorials (A002109).
%C The number of trailing zeros in A002109 increases every 5 terms since the exponent of the factor 5 increases every 5 terms and the exponent of the factor 2 increases every 2 terms.
%H Chai Wah Wu, <a href="/A246817/b246817.txt">Table of n, a(n) for n = 1..1000</a>
%o (Python)
%o from sympy import multiplicity
%o A246817, p5 = [0], 0
%o for n in range(5,5*10**3,5):
%o ....p5 += multiplicity(5,n)*n
%o ....A246817.append(p5) # _Chai Wah Wu_, Sep 05 2014
%Y Cf. A002109, A191610, A246839.
%K nonn,base
%O 1,2
%A _Chai Wah Wu_, Sep 03 2014
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