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A039649 phi(n)+1. 19
2, 2, 3, 3, 5, 3, 7, 5, 7, 5, 11, 5, 13, 7, 9, 9, 17, 7, 19, 9, 13, 11, 23, 9, 21, 13, 19, 13, 29, 9, 31, 17, 21, 17, 25, 13, 37, 19, 25, 17, 41, 13, 43, 21, 25, 23, 47, 17, 43, 21, 33, 25, 53, 19, 41, 25, 37, 29, 59, 17, 61, 31, 37, 33, 49, 21, 67, 33, 45, 25, 71, 25, 73, 37, 41 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

a(p) = p for p prime.

FORMULA

a(n) <= n for n > 1.

CROSSREFS

Cf. A000010, A039650-A039656.

Sequence in context: A204908 A069974 A039650 * A113605 A070230 A007150

Adjacent sequences:  A039646 A039647 A039648 * A039650 A039651 A039652

KEYWORD

nonn,easy

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

EXTENSIONS

Edited by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Mar 18 2010

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Last modified February 15 07:22 EST 2012. Contains 205706 sequences.