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A087521 Smallest prime p such that the prime signature of p+1 has not occurred earlier. 1
2, 3, 5, 7, 11, 23, 29, 31, 47, 59, 71, 127, 167, 179, 191, 223, 239, 359, 383, 389, 419, 431, 479, 719, 839, 863, 971, 1151, 1259, 1279, 1439, 1511, 2111, 2309, 2591, 2687, 2699, 2879, 3023, 3119, 3359, 3583, 3779, 5039, 5119, 5399, 6047, 6143, 6299, 6719 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..49.

CROSSREFS

Cf. A087520.

Sequence in context: A068863 A284146 A317479 * A078403 A129945 A046704

Adjacent sequences:  A087518 A087519 A087520 * A087522 A087523 A087524

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Sep 11 2003

EXTENSIONS

Edited by Ray Chandler, Sep 14 2003

STATUS

approved

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Last modified August 22 11:34 EDT 2019. Contains 326176 sequences. (Running on oeis4.)