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A032621 Numbers n such that n concatenated with n + 6 is a prime. +0
2
1, 11, 13, 17, 25, 31, 35, 43, 65, 71, 83, 95, 97, 101, 125, 127, 137, 151, 155, 157, 161, 163, 167, 187, 197, 203, 205, 211, 217, 221, 223, 227, 233, 235, 245, 251, 257, 263, 265, 271, 283, 317, 331, 335, 337, 341, 353, 355, 373, 385, 391, 401, 427, 433 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Cf. A032611.

Sequence in context: A048059 A106076 A006489 this_sequence A052031 A166009 A105892

Adjacent sequences: A032618 A032619 A032620 this_sequence A032622 A032623 A032624

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


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