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A032624 Numbers n such that n concatenated with n + 9 is a prime. 2
2, 10, 14, 20, 28, 38, 40, 50, 52, 58, 62, 64, 70, 80, 82, 100, 104, 110, 112, 118, 122, 124, 142, 148, 160, 164, 170, 172, 178, 188, 194, 208, 218, 224, 230, 238, 244, 248, 250, 260, 262, 274, 284, 292, 298, 308, 320, 338, 344, 352, 362, 364, 382, 398, 400 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..55.

CROSSREFS

Cf. A032614.

Sequence in context: A324856 A050546 A032384 * A091999 A230624 A290143

Adjacent sequences:  A032621 A032622 A032623 * A032625 A032626 A032627

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, May 15 1998

STATUS

approved

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Last modified May 31 00:53 EDT 2020. Contains 334747 sequences. (Running on oeis4.)