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A106125
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Numbers n such that n divides n-th semiprime.
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0
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1, 2, 3, 7, 11, 43, 53, 613367, 613439, 613451, 613523, 613549, 613609, 6384425461, 6384425521, 6384425569, 6384425647
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Note that except 1, all other term in the sequence will be primes.
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EXAMPLE
| a(4)=7 is a term because 7 divides the 7th semiprime (i.e. 21).
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CROSSREFS
| Cf. A001358.
Sequence in context: A056354 A072534 A056292 * A175171 A073609 A053781
Adjacent sequences: A106122 A106123 A106124 * A106126 A106127 A106128
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KEYWORD
| easy,nonn
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AUTHOR
| Shyam Sunder Gupta (guptass(AT)rediffmail.com), May 07 2005
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EXTENSIONS
| a(14)-a(17) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Sep 27 2010
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