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A091260
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Denominator of sigma[3,n]/sigma[2,n].
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1
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1, 5, 5, 21, 13, 25, 25, 17, 91, 65, 61, 15, 85, 125, 65, 11, 145, 455, 181, 13, 125, 305, 265, 85, 651, 425, 41, 525, 421, 325, 481, 455, 305, 725, 325, 1911, 685, 181, 425, 17, 841, 625, 925, 427, 169, 1325, 1105, 55, 817, 1085, 725, 255, 1405, 205, 793, 425, 181
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| Harvey P. Dale, Table of n, a(n) for n = 1..1000
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MATHEMATICA
| Denominator[Table[DivisorSigma[3, n]/DivisorSigma[2, n], {n, 60}]] (* From Harvey P. Dale, Nov 03 2011 *)
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CROSSREFS
| Cf. A001158, A001157, A000203, A091258-A091261.
Sequence in context: A154643 A186411 A127513 * A171219 A146043 A116400
Adjacent sequences: A091257 A091258 A091259 * A091261 A091262 A091263
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KEYWORD
| easy,nonn,frac
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Feb 12 2004
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