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%I #12 May 28 2018 17:24:56
%S 0,1,5,11,59,179,1259,2519,7559,37799,415799,1247399,16216199,
%T 113513399,567566999,1135133999,19297277999,57891833999,1099944845999,
%U 5499724229999,38498069609999,423478765709999,9740011611329999
%N a(n) = A104350(n) - 1.
%H G. C. Greubel, <a href="/A104357/b104357.txt">Table of n, a(n) for n = 1..640</a>
%H R. Zumkeller, <a href="/A104350/a104350.txt">Products of largest prime factors of numbers <= n</a>
%F a(n) = (a(n-1) + 1) * A006530(n) - 1 for n>1, a(1) = 0;
%t A104350[n_] := Product[FactorInteger[k][[-1, 1]], {k, 1, n}]; Table[A104350[n] - 1, {n, 1, 50}] (* _G. C. Greubel_, May 09 2017 *)
%t FoldList[Times,Table[FactorInteger[n][[-1,1]],{n,30}]]-1 (* _Harvey P. Dale_, May 28 2018 *)
%Y Cf. A104358, A104359, A104360, A104361, A104362, A104363, A104365, A033312, A057588.
%K nonn
%O 1,3
%A _Reinhard Zumkeller_, Mar 06 2005