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A280115
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Partial products of A175317 (Sum_{d|n} pod(d)).
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2
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1, 3, 12, 132, 792, 33264, 266112, 19958400, 618710400, 66820723200, 801848678400, 1425686950195200, 19959617302732800, 4111681164362956800, 962133392460931891200, 1057384598314564148428800, 19032922769662154671718400, 112313277263776374717810278400
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OFFSET
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1,2
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COMMENTS
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pod(n) is the product of the divisors of n (A007955).
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LINKS
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FORMULA
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a(n) = Product_{i=1..n} A175317(i).
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MATHEMATICA
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FoldList[Times[#1, #2] &, Array[Sum[Times @@ Divisors@ d, {d, Divisors@ #}] &, 18]] (* Michael De Vlieger, Dec 26 2016 *)
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PROG
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(Magma) [&*[&+[&*[b: b in Divisors(d)]: d in Divisors(k)]: k in [1..n]]: n in [1..1000]]
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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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