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A076244
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Distinct values arising in A051547, sequence of a(n) = lcm(phi(1), ..., phi(n)).
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4
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1, 2, 4, 12, 60, 120, 240, 720, 7920, 55440, 1275120, 2550240, 33153120, 961440480, 2884321440, 118257179040, 236514358080, 1182571790400, 20103720436800, 1065497183150400, 39423395776564800, 118270187329694400
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Union@ FoldList[LCM @@ {#1, EulerPhi@ #2} &, Range@ 165] (* Michael De Vlieger, Dec 09 2018 *)
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PROG
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(PARI) lista(nn) = {last = -1; for (n=1, nn, new = lcm(vector(n, k, eulerphi(k))); if (new != last, print1(new, ", "); last = new); ); } \\ Michel Marcus, Mar 18 2018
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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