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0, 1, 1, 4, 1, 1, 12, 6, 1, 1, 32, 1, 1, 1, 10, 27, 1, 1, 80, 1, 1, 1, 1, 14, 1, 1, 1, 192, 1, 1, 1, 1, 108, 1, 1, 1, 1, 1, 1, 1, 1, 22, 75, 1, 448, 1, 1, 1, 1, 1, 1, 1, 1, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 405, 1, 1024, 1, 1, 1, 1, 1, 1, 1, 34
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OFFSET
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1,4
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COMMENTS
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a(A000040(n)) = 1; a(A002808(n)) > 1;
A001787, A027471, A100484, A079705 and A051674 are subsequences;
A001787 and A024622 give record values and where they occur;
A192016(n) = A003415(a(n)).
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LINKS
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Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Prime Power
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FORMULA
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a(n) = A025474(n) * A025473(n)^(A025474(n) - 1).
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MATHEMATICA
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Join[{0}, Reap[For[n = 1, n <= 300, n++, f = FactorInteger[n]; If[Length[f] == 1, Sow[n*Total[Apply[#2/#1&, f, {1}]]]]]][[2, 1]]] (* Jean-François Alcover, Feb 21 2014 *)
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PROG
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(Haskell)
a192015 = a003415 . a000961 -- Reinhard Zumkeller, Apr 16 2014
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CROSSREFS
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Sequence in context: A146967 A173152 A156049 * A205946 A101919 A055106
Adjacent sequences: A192012 A192013 A192014 * A192016 A192017 A192018
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller, Jun 26 2011
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STATUS
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approved
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