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A133261 Union of A134196 and A134197 : A126990 with duplicates removed. 0
3, 7, 13, 19, 23, 31, 37, 43, 47, 53, 61, 67, 73, 83, 89, 97, 103, 109, 113, 131, 139, 151, 157, 167, 173, 181, 193, 199, 211, 223, 229, 233, 241, 251, 257, 263, 271, 277, 283, 293, 307, 313, 317, 337, 349, 353, 359, 367, 373, 383, 389, 401, 409, 421, 433, 443 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

<< NumberTheory`NumberTheoryFunctions` a = {}; Do[AppendTo[a, PreviousPrime[Sqrt[(Prime[ x - 1])*(Prime[x + 1])]]], {x, 2, 300}]; Union[a]

CROSSREFS

Cf. A134196, A134197, A126990.

Sequence in context: A291283 A133387 A105399 * A113911 A051635 A136009

Adjacent sequences:  A133258 A133259 A133260 * A133262 A133263 A133264

KEYWORD

nonn

AUTHOR

Artur Jasinski, Oct 15 2007

STATUS

approved

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Last modified March 24 06:56 EDT 2019. Contains 321444 sequences. (Running on oeis4.)