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A031157 Numbers that are both lucky and prime. 10
3, 7, 13, 31, 37, 43, 67, 73, 79, 127, 151, 163, 193, 211, 223, 241, 283, 307, 331, 349, 367, 409, 421, 433, 463, 487, 541, 577, 601, 613, 619, 631, 643, 673, 727, 739, 769, 787, 823, 883, 937, 991, 997, 1009, 1021, 1039, 1087, 1093, 1117, 1123 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A010051(a(n))*A145649(a(n)) = 1. [Reinhard Zumkeller, Oct 19 2008]

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

Wikipedia, Lucky prime

MATHEMATICA

luckies = Range[1, 1248, 2]; i = 2; While[ i <= (len = Length@luckies) && (k = luckies[[i]]) <= len, luckies = Drop[luckies, {k, len, k}]; i++ ]; Select[luckies, PrimeQ@# &] (* Robert G. Wilson v, May 12 2006 *)

CROSSREFS

Cf. A000959, A055728.

Sequence in context: A249378 A136060 A023227 * A049488 A136051 A100750

Adjacent sequences:  A031154 A031155 A031156 * A031158 A031159 A031160

KEYWORD

nonn

AUTHOR

Patrick De Geest

STATUS

approved

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Last modified December 19 01:55 EST 2014. Contains 252175 sequences.