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Search: id:A034488
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| A034488 |
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Sum of n-th powers of divisors of 6. |
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+0
3
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| 4, 12, 50, 252, 1394, 8052, 47450, 282252, 1686434, 10097892, 60526250, 362976252, 2177317874, 13062296532, 78368963450, 470199366252, 2821153019714, 16926788715972, 101560344351050, 609360902796252
(list; graph; listen)
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OFFSET
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0,1
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FORMULA
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1^n+2^n+3^n+6^n.
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MATHEMATICA
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a[n_] := (2^n + 1)*(3^n + 1); Table[a[n], {n, 0, 19}] - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 25 2007
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PROGRAM
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(Other) sage: [sigma(6, n)for n in xrange(0, 20)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 04 2009]
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CROSSREFS
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Sequence in context: A149395 A149396 A149397 this_sequence A149398 A149399 A149400
Adjacent sequences: A034485 A034486 A034487 this_sequence A034489 A034490 A034491
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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