A372840 - OEIS

A372840

a(n) = 5-adic valuation of A008336(5*n).

0, 1, 0, 1, 0, 2, 1, 2, 3, 2, 0, 1, 0, 1, 0, 2, 3, 4, 3, 2, 0, 1, 0, 1, 2, 5, 4, 3, 4, 5, 3, 4, 5, 4, 3, 1, 0, 1, 0, 1, 3, 4, 3, 4, 5, 3, 2, 1, 2, 3, 0, 1, 0, 1, 0, 2, 3, 4, 3, 4, 2, 3, 2, 3, 4, 2, 1, 0, 1, 2, 0, 1, 0, 1, 0, 3, 4, 3, 2, 1, 3, 2, 1, 0, 1, 3, 2

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OFFSET

1,6

LINKS

Michael De Vlieger, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = A112765(A008336(5*n)).

MATHEMATICA

k = 3; nn = 600; p[_] := 0; r = 0; q = Prime[k];

{0}~Join~Reap[

Do[If[AnyTrue[#, p[#1] < #2 & @@ # &],

Map[p[#1] += #2 & @@ # &, #],