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A234962 Primes missing from the tree generated at A234960. 3
71, 101, 109, 151, 181, 191, 229, 233, 239, 241, 269, 283, 311, 349, 367, 373, 379, 409, 419, 433, 439, 461, 463, 467, 479, 487, 491, 569, 571, 593, 599, 601, 607, 643, 647, 653, 659, 683, 727, 733, 739, 743, 751, 757, 811, 821, 823, 827, 829, 857, 877, 881 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

According to the conjecture at A234961, the limiting relative density of these primes is 1.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..7000

MATHEMATICA

t = NestList[DeleteDuplicates[Flatten[Map[{#, NextPrime[2 #, -1], NextPrime[2 #, 1]} &, #]]] &, {2}, 12]; Complement[Map[Prime, Range[PrimePi[Last[#]]]], #] &[Last[t]]

(* Peter J. C. Moses, Dec 30 2013 *)

CROSSREFS

Cf. A234960, A234961.

Sequence in context: A155953 A247200 A288907 * A166252 A166576 A195270

Adjacent sequences:  A234959 A234960 A234961 * A234963 A234964 A234965

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jan 01 2014

STATUS

approved

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Last modified August 3 20:08 EDT 2020. Contains 336201 sequences. (Running on oeis4.)