A182392 - OEIS

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A182392

Numbers n for which there exists only composite number k such that A060715(k) = n and 2*k-1 is prime, but A104272(n) differs from A080359(n).

3, 8, 36, 55, 58, 83, 129, 134, 143, 155, 186, 197, 207, 218, 269, 295, 309, 310, 361, 362, 380, 396, 412, 454, 466, 473, 505, 511, 514, 544, 549, 556, 563, 616, 631, 660, 666, 677, 683, 697, 771, 781, 788, 797, 812, 873, 874, 881, 883, 894, 906, 953

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OFFSET

1,1

COMMENTS

There exists a prime p=p(n) such that 2*p-1 is prime and A060715(p)=a(n)-1 (cf. comment in A182391).

LINKS

Table of n, a(n) for n=1..52.

CROSSREFS

Cf. A104272, A080359, A164554, A193507, A194184, A194186, A194217, A182366, A182391.

Sequence in context: A194090 A294385 A020099 * A005635 A026649 A148919

Adjacent sequences: A182389 A182390 A182391 * A182393 A182394 A182395

KEYWORD

nonn

AUTHOR

Vladimir Shevelev and Peter J. C. Moses, Apr 27 2012

STATUS

approved