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A032627 Primes that are concatenations of n with n + 4. +0
1
37, 59, 1721, 2731, 3539, 3943, 4549, 4751, 6367, 6569, 8387, 9397, 99103, 113117, 123127, 147151, 149153, 173177, 185189, 203207, 209213, 213217, 219223, 227231, 239243, 249253, 255259, 263267, 267271, 285289, 287291 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Cf. A032609, A032619.

Sequence in context: A105460 A141851 A105461 this_sequence A139960 A103946 A107142

Adjacent sequences: A032624 A032625 A032626 this_sequence A032628 A032629 A032630

KEYWORD

nonn

AUTHOR

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

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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