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A088618 Rearrangement of odd numbers such that every concatenation of at least two terms is composite. 0
1, 5, 13, 3, 15, 9, 17, 7, 23, 19, 25, 35, 21, 39, 37, 11, 33, 45, 27, 47, 31, 51, 41, 55, 29, 43, 61, 59, 57, 53, 49, 63, 65, 75, 67, 71, 69, 79, 77, 81, 73, 85, 91, 95, 83, 97, 105, 87, 101, 99, 115, 107, 93, 123, 111, 117, 113, 109, 119, 103, 121, 125, 129, 135, 133, 137 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Conjecture: Sequence is infinite. And every odd number is a member.
LINKS
EXAMPLE
15,513,133,315,1513,5133,13315,15133,513315,1513315 all are composite.
CROSSREFS
Sequence in context: A035412 A338985 A065865 * A121645 A057691 A297903
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Oct 17 2003
EXTENSIONS
More terms from Ray Chandler, Oct 18 2003
STATUS
approved

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Last modified May 28 12:54 EDT 2024. Contains 372913 sequences. (Running on oeis4.)