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A294650
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a(n) = denominator(A206369(n))/n.
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2
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1, 2, 3, 4, 5, 3, 7, 8, 9, 5, 11, 2, 13, 7, 15, 16, 17, 18, 19, 5, 7, 11, 23, 12, 25, 13, 27, 14, 29, 15, 31, 32, 33, 17, 35, 12, 37, 19, 13, 2, 41, 7, 43, 22, 45, 23, 47, 24, 49, 50, 51, 13, 53, 27, 11, 28, 19, 29, 59, 5, 61, 31, 3, 64, 65, 33, 67, 17, 69, 35
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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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(* b = A209369 *) b[n_] := n*DivisorSum[n, LiouvilleLambda[#]/# &];
a[n_] := Denominator[b[n]/n];
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PROG
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(PARI) rhope(p, e) = my(s=1); for(i=1, e, s=s*p + (-1)^i); s;
rho(n) = my(f=factor(n)); prod(i=1, #f~, rhope(f[i, 1], f[i, 2]));
a(n) = denominator(rho(n)/n);
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CROSSREFS
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KEYWORD
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nonn,frac
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AUTHOR
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STATUS
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approved
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