A138539 - OEIS

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A138539

Primes p_n for which A140141(n) < 2p_n, where p_n = n-th prime (A000040).

4

2, 3, 5, 7, 13, 17, 19, 37, 41, 43, 61, 73, 89, 97, 101, 109, 113, 157, 163, 181, 193, 233, 241, 257, 277, 281, 313, 337, 349, 353, 397, 401, 409, 421, 433, 449, 457, 461, 487, 521, 541, 577, 593, 601, 613, 617, 641, 661, 673, 701, 733, 757, 761, 769, 821, 829

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OFFSET

1,1

COMMENTS

Apparently this is the union of {2} and A058341. - R. J. Mathar, Jul 03 2009

This sequence is the complement of A058340. - Torlach Rush, Jun 29 2018

LINKS

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

CROSSREFS

Cf. A140141, A039649, A000010, A000040, A058340.

Sequence in context: A109799 A152961 A109461 * A337119 A090422 A005109

Adjacent sequences: A138536 A138537 A138538 * A138540 A138541 A138542

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, May 10 2008

EXTENSIONS

Corrected and extended by Ray Chandler, May 20 2008

STATUS

approved