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A096917 Smallest prime-factor of n-th product of 3 distinct primes. +0
4
2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 3, 2, 2, 3, 2, 2, 3, 2, 2, 3, 2, 3, 2, 2, 2, 2, 2, 3, 2, 3, 2, 2, 2, 5, 3, 2, 2, 2, 2, 2, 3, 2, 2, 3, 2, 2, 5, 3, 2, 2, 3, 2, 2, 2, 2, 2, 2, 3, 3, 2, 2, 2, 5, 2, 2, 2, 3, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 5, 2, 2, 2, 3, 2, 5, 2, 3, 2, 2, 3, 2, 3, 2 (list; graph; listen)
OFFSET

1,1

COMMENT

a(n)*A096918(n)*A096919(n)=A007304(n); a(n)<A096918(n)<A096919(n);

a(n) = A020639(A007304(n)).

CROSSREFS

Sequence in context: A109913 A048052 A024708 this_sequence A068049 A141256 A131841

Adjacent sequences: A096914 A096915 A096916 this_sequence A096918 A096919 A096920

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 15 2004

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


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