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Search: id:A062755
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| A062755 |
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sigma_n(n^2): sum of n-th powers of divisors of n^2. |
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+0
1
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| 1, 21, 757, 69905, 9768751, 2214363531, 678223896393, 282578800148737, 150102261281924281, 100097761867442455851, 81402749387125072783933, 79516409977044969123349715, 91733330193268919533506208263
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,100
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PROGRAM
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(PARI) for(n=1, 22, print(sigma(n^2, n)))
(Other) sage: [sigma(n^2, n)for n in xrange(1, 14)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 13 2009]
(PARI) { for (n=1, 100, write("b062755.txt", n, " ", sigma(n^2, n)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 10 2009]
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CROSSREFS
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Sequence in context: A012479 A078791 A143002 this_sequence A012850 A012645 A028469
Adjacent sequences: A062752 A062753 A062754 this_sequence A062756 A062757 A062758
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jul 15 2001
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