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A051615 Primes for which A051614 is 3. 1
5, 11, 17, 23, 29, 41, 47, 53, 71, 83, 89, 107, 113, 131, 137, 167, 173, 179, 191, 197, 227, 233, 239, 251, 257, 263, 281, 293, 317, 347, 359, 401, 419, 431, 443, 449, 467, 491, 509, 557, 569, 587, 593, 599, 617, 641, 647, 653, 659, 677, 683, 701, 719, 743 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..54.

FORMULA

Odd p values such that F(2*p*F(2*p+1)+1)=3, where F(x) is the least prime divisor of x.

CROSSREFS

Cf. A000945, A051309 - A051335, A005384.

Sequence in context: A007528 A144918 A144920 * A063909 A181575 A194384

Adjacent sequences:  A051612 A051613 A051614 * A051616 A051617 A051618

KEYWORD

nonn

AUTHOR

Labos Elemer

STATUS

approved

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Last modified October 15 07:38 EDT 2019. Contains 328026 sequences. (Running on oeis4.)