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A046411
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Concatenation of prime factors of a(n) is a prime.
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9
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6, 12, 18, 21, 22, 28, 33, 39, 46, 51, 52, 54, 58, 63, 66, 70, 82, 84, 93, 98, 111, 115, 117, 133, 141, 142, 148, 154, 159, 162, 165, 166, 171, 172, 175, 177, 182, 187, 198, 201, 205, 207, 210, 219, 220, 226, 232, 235, 237, 245, 246, 247, 249, 253, 255, 261
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| For the corresponding primes, see A038514. [From Lekraj Beedassy (blekraj(AT)yahoo.com), Jun 05 2009]
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LINKS
| P. De Geest, Home Primes
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EXAMPLE
| 162 = 2 * 3 * 3 * 3 * 3 and 23333 is a prime, so 162 is in the sequence.
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CROSSREFS
| Cf. A037271-A037281.
Sequence in context: A088723 A138939 A105935 * A160594 A146538 A154373
Adjacent sequences: A046408 A046409 A046410 * A046412 A046413 A046414
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KEYWORD
| nonn,base
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.
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EXTENSIONS
| Edited by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Apr 23 2010
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