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A138888 Non-Fermat numbers. 5
1, 2, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Numbers that are not members of A000215.

LINKS

Table of n, a(n) for n=1..70.

CROSSREFS

Cf. A000215, A001690, A018252.

Sequence in context: A240817 A174416 A228728 * A039240 A039183 A039136

Adjacent sequences:  A138885 A138886 A138887 * A138889 A138890 A138891

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol, Apr 03 2008

STATUS

approved

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Last modified September 16 23:53 EDT 2021. Contains 347477 sequences. (Running on oeis4.)