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Search: id:A064919
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A064919 a(n) = Min { k | A064916(k) = n }. +0
4
2, 3, 6, 5, 10, 7, 14, 16, 18, 11, 22, 13, 26, 28, 30, 17, 34, 19, 38, 40, 42, 23, 46, 48, 50, 52, 54, 29, 58, 31, 62, 64, 66, 68, 70, 37, 74, 76, 78, 41, 82, 43, 86, 88, 90, 47, 94, 96, 98, 100, 102, 53, 106, 108, 110, 112, 114, 59, 118, 61, 122, 124, 126, 128, 130, 67 (list; graph; listen)
OFFSET

2,1

COMMENT

A064916(a(n)) = n.

FORMULA

For n > 2: a(n) = if n is prime then n else 2*n - 2.

CROSSREFS

A064916, A064923, A064924.

Sequence in context: A091239 A145110 A043547 this_sequence A064923 A064924 A055944

Adjacent sequences: A064916 A064917 A064918 this_sequence A064920 A064921 A064922

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 14 2001

page 1

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Last modified December 3 16:57 EST 2008. Contains 151279 sequences.


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