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A119288 Least prime factor of n divided by the maximal power of the least prime factor of n. +0
6
1, 1, 1, 1, 1, 3, 1, 1, 1, 5, 1, 3, 1, 7, 5, 1, 1, 3, 1, 5, 7, 11, 1, 3, 1, 13, 1, 7, 1, 3, 1, 1, 11, 17, 7, 3, 1, 19, 13, 5, 1, 3, 1, 11, 5, 23, 1, 3, 1, 5, 17, 13, 1, 3, 11, 7, 19, 29, 1, 3, 1, 31, 7, 1, 13, 3, 1, 17, 23, 5, 1, 3, 1, 37, 5, 19, 11, 3, 1, 5, 1, 41, 1, 3, 17, 43, 29, 11, 1, 3, 13, 23 (list; graph; listen)
OFFSET

1,6

COMMENT

a(n) = A020639(A028234(n));

a(n) = 1 iff n is a prime power: a(A000961(n))=1 and a(A024619(n))>1.

FORMULA

A010055(n) = 0^(a(n)-1). - Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), May 13 2006

CROSSREFS

Cf. A014673.

Sequence in context: A123940 A101021 A086767 this_sequence A028234 A052125 A081060

Adjacent sequences: A119285 A119286 A119287 this_sequence A119289 A119290 A119291

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), May 13 2006

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.


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