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A122531 Primes equal to arithmetic mean of 6 successive primes; or primes in A122040(n). 2
101, 139, 227, 419, 431, 883, 1021, 1231, 1303, 1433, 1447, 1543, 1583, 1621, 1721, 1993, 2243, 2251, 2351, 2531, 2539, 2591, 2693, 2707, 2713, 2753, 3359, 3461, 3541, 3911, 4091, 4153, 4423, 4447, 5011, 5233, 5527, 5869, 6029, 6091, 6469, 6481, 6569 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Table[Sum[Prime[k], {k, n, n+5}], {n, 1, 1000}]/6, IntegerQ[ #1]&&PrimeQ[ #1]&]

Select[Mean/@Partition[Prime[Range[900]], 6, 1], PrimeQ] (* Harvey P. Dale, Apr 18 2018 *)

CROSSREFS

Cf. A122040.

Sequence in context: A139489 A106994 A050672 * A141871 A238503 A050806

Adjacent sequences:  A122528 A122529 A122530 * A122532 A122533 A122534

KEYWORD

nonn

AUTHOR

Alexander Adamchuk, Sep 17 2006

STATUS

approved

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Last modified June 18 18:09 EDT 2021. Contains 345120 sequences. (Running on oeis4.)