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Search: id:A065303
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A065303 Neither n nor sigma[n] is square-free. +0
5
12, 24, 27, 28, 32, 40, 44, 48, 52, 54, 56, 60, 63, 68, 75, 76, 81, 84, 88, 90, 92, 96, 98, 99, 108, 112, 120, 124, 125, 126, 132, 135, 136, 140, 147, 150, 152, 153, 156, 160, 162, 164, 168, 171, 172, 175, 176, 184, 188, 189, 192, 198, 204, 207, 212, 216, 220 (list; graph; listen)
OFFSET

1,1

EXAMPLE

n = 147 = 3.7.7, sigma[147] = 2.2.3.19 = 228

CROSSREFS

A000203, A008683, A065299-A065302.

Adjacent sequences: A065300 A065301 A065302 this_sequence A065304 A065305 A065306

Sequence in context: A040132 A095780 A119588 this_sequence A108902 A126935 A074697

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Oct 29 2001

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.


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