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A086287 Greatest prime factor of 7-smooth numbers. +0
2
1, 2, 3, 2, 5, 3, 7, 2, 3, 5, 3, 7, 5, 2, 3, 5, 7, 3, 5, 3, 7, 5, 2, 7, 3, 5, 7, 5, 3, 7, 5, 3, 7, 5, 7, 2, 7, 3, 5, 5, 3, 7, 5, 3, 7, 5, 7, 3, 7, 5, 5, 7, 2, 5, 7, 3, 7, 5, 5, 3, 7, 7, 5, 7, 3, 7, 5, 7, 3, 7, 5, 5, 3, 7, 5, 7, 2, 5, 7, 3, 7, 5, 7, 5, 3, 7, 7, 7, 5, 5, 7, 3, 7, 5, 5, 7, 3, 7, 7, 5 (list; graph; listen)
OFFSET

1,2

COMMENT

a(n) = A006530(A002473(n)).

A086286(n) <= a(n) <= 7.

CROSSREFS

Sequence in context: A067629 A079870 A076690 this_sequence A090662 A088387 A006530

Adjacent sequences: A086284 A086285 A086286 this_sequence A086288 A086289 A086290

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 15 2003

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


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