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Search: id:A054211
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A054211 Numbers n such that n concatenated with n-1 is prime. +0
3
4, 10, 22, 24, 34, 42, 58, 70, 78, 88, 100, 102, 108, 112, 114, 124, 148, 154, 160, 172, 180, 192, 198, 202, 208, 210, 214, 238, 244, 262, 264, 268, 270, 282, 294, 300, 304, 312, 328, 330, 334, 340, 342, 354, 372, 384, 390, 394, 412, 414, 420, 424, 444, 454 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Cf. A052089, A030457, A030458, A052087, A052088.

Sequence in context: A053643 A111927 A109885 this_sequence A112770 A112774 A008178

Adjacent sequences: A054208 A054209 A054210 this_sequence A054212 A054213 A054214

KEYWORD

nonn,base,nice

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Feb 15 2000.

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.


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