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A086134 Smallest prime factor of arithmetic derivative of n or a(n)=0 if no such prime exists. +0
2
0, 0, 0, 2, 0, 5, 0, 2, 2, 7, 0, 2, 0, 3, 2, 2, 0, 3, 0, 2, 2, 13, 0, 2, 2, 3, 3, 2, 0, 31, 0, 2, 2, 19, 2, 2, 0, 3, 2, 2, 0, 41, 0, 2, 3, 5, 0, 2, 2, 3, 2, 2, 0, 3, 2, 2, 2, 31, 0, 2, 0, 3, 3, 2, 2, 61, 0, 2, 2, 59, 0, 2, 0, 3, 5, 2, 2, 71, 0, 2, 2, 43, 0, 2, 2, 3, 2, 2, 0, 3, 2, 2, 2, 7, 2, 2, 0, 7, 3, 2, 0, 7 (list; graph; listen)
OFFSET

1,4

CROSSREFS

Cf. A003415.

Sequence in context: A069025 A145962 A066442 this_sequence A071090 A105221 A061376

Adjacent sequences: A086131 A086132 A086133 this_sequence A086135 A086136 A086137

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Jul 23 2003

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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