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A179538 Numbers 2n+1 for which A003558(n), n>=1, are record values of A003558 0
3, 5, 7, 11, 13, 19, 23, 29, 37, 47, 53, 59, 61, 67, 71, 79, 83, 101, 103, 107, 121, 131, 139, 149, 163, 167, 173, 179, 181, 191, 197, 199, 211, 227, 239, 263, 269, 271, 293, 311, 317, 347, 349, 359, 367, 373, 379, 383, 389, 419, 421, 443, 461, 463, 467, 479 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture. All terms are primes except for a finite set of squares of primes.

All terms from a(1) to a(5000) are primes except for a(21) = 121 = 11^2, supporting V. Shevelev's conjecture. [From John W. Layman, Jul 22 2010]

LINKS

Table of n, a(n) for n=1..56.

CROSSREFS

Cf. A139099 A179383 A179481

Sequence in context: A191377 A095070 A079733 * A216371 A095747 A132779

Adjacent sequences:  A179535 A179536 A179537 * A179539 A179540 A179541

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, Jul 18 2010

EXTENSIONS

Terms a(31)-a(56) from John W. Layman, Jul 22 2010

STATUS

approved

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Last modified March 21 12:12 EDT 2019. Contains 321369 sequences. (Running on oeis4.)