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A030470 Numbers n such that n concatenated with n+1, n+2, n+3 is prime. +0
1
4, 14, 20, 34, 58, 64, 118, 140, 148, 176, 196, 218, 220, 236, 238, 268, 278, 286, 316, 334, 374, 386, 398, 428, 430, 436, 446, 460, 470, 496, 508, 514, 550, 566, 568, 590, 610, 616, 634, 644, 670, 674, 688, 706, 718, 728, 740, 746, 764, 770 (list; graph; listen)
OFFSET

1,1

EXAMPLE

E.g. 4567 is prime.

CROSSREFS

Sequence in context: A139330 A051448 A075319 this_sequence A051806 A034051 A044437

Adjacent sequences: A030467 A030468 A030469 this_sequence A030471 A030472 A030473

KEYWORD

nonn

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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