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A083714 (greatest prime <= n) - (greatest prime factor of n). +0
5
0, 0, 0, 1, 0, 2, 0, 5, 4, 2, 0, 8, 0, 6, 8, 11, 0, 14, 0, 14, 12, 8, 0, 20, 18, 10, 20, 16, 0, 24, 0, 29, 20, 14, 24, 28, 0, 18, 24, 32, 0, 34, 0, 32, 38, 20, 0, 44, 40, 42, 30, 34, 0, 50, 42, 46, 34, 24, 0, 54, 0, 30, 54, 59, 48, 50, 0, 50, 44, 60, 0, 68, 0, 36, 68, 54, 62, 60, 0, 74 (list; graph; listen)
OFFSET

1,6

COMMENT

a(n) = A007917(n) - A006530(n);

n>1: a(n) = 0 iff n is prime.

CROSSREFS

Cf. A083718, A083715, A083716, A083717.

Sequence in context: A107363 A095245 A086280 this_sequence A137421 A051111 A068558

Adjacent sequences: A083711 A083712 A083713 this_sequence A083715 A083716 A083717

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 04 2003

page 1

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Last modified September 8 08:06 EDT 2008. Contains 143486 sequences.


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