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A185291
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Dirichlet convolution of A000001 with itself.
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1
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1, 2, 2, 5, 2, 6, 2, 14, 5, 6, 2, 18, 2, 6, 4, 42, 2, 18, 2, 18, 6, 6, 2, 58, 5, 6, 14, 16, 2, 18, 2, 150, 4, 6, 4, 60, 2, 6, 6, 56, 2, 24, 2, 16, 10, 6, 2, 202, 5, 18, 4, 18, 2, 58, 6, 52, 6, 6, 2, 66, 2, 6, 16, 717, 4, 18, 2, 18, 4, 18, 2, 218, 2, 6, 12
(list;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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Table of n, a(n) for n=1..75.
E. W. Weisstein, Finite Group. From MathWorld--A Wolfram Web Resource.
E. W. Weisstein, "Dirichlet Series Generating Function. From MathWorld--A Wolfram Web Resource.
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MATHEMATICA
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con[f_, g_, x_] := Sum[f[k] g[x/k], {k, Divisors[x]}]; Table[con[FiniteGroupCount, FiniteGroupCount, x], {x, 1, 100}]
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PROG
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(PARI) DC(a, b)=vector(min(#a, #b), n, sumdiv(n, d, a[d]*b[n/d]))
A185291=DC(A1, A1) /* where A1 is a vector of the first values of A000001 */ - M. F. Hasler, Jan 26 2012
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CROSSREFS
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Sequence in context: A093660 A093663 A011143 * A018216 A059907 A024931
Adjacent sequences: A185288 A185289 A185290 * A185292 A185293 A185294
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KEYWORD
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nonn
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AUTHOR
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Ben Branman, Jan 25 2012
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EXTENSIONS
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Data and Mmca code corrected by M. F. Hasler, Jan 26 2012
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STATUS
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approved
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