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%I #10 Feb 26 2019 09:09:08
%S 1,765257552,4858337151,62987487698944,14281197489647865625,
%T 16756687971893376,956884714362661,292452281337511936,
%U 11897243269649199,1,824281567746336491,13552472793415699584,841944776182612378933,9434962871842528764976
%N a(n) is the largest value obtained by iterating x -> noz(x * n) starting from 1 (where noz(k) = A004719(k) omits the zeros from k) if any, otherwise a(n) = -1.
%C Is every term positive?
%H Rémy Sigrist, <a href="/A306569/b306569.txt">Table of n, a(n) for n = 1..250</a>
%H Rémy Sigrist, <a href="/A306569/a306569.gp.txt">PARI program for A306569</a>
%F a(10^k) = 1 for any k >= 0.
%F a(10*n) = a(n) for any n > 0.
%e a(2) = max(A242350) = 765257552.
%o (PARI) See Links section.
%Y See A306567 for the additive variant.
%Y Cf. A004719, A242350.
%K nonn,base
%O 1,2
%A _Rémy Sigrist_, Feb 24 2019
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