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A100419 Numbers n such that 30*n+{1,7,13,17,19,23,29} are all prime. 2
89, 6627, 18674, 223949, 229269, 240007, 267356, 606681, 638454, 771496, 951060, 1068030, 1150693, 1254839, 1688923, 1920084, 2413577, 2433289, 2649414, 3053398, 3080572, 3337444, 3586658, 3604256, 3830335, 4137166 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Values are 5 mod 7.

LINKS

Table of n, a(n) for n=1..26.

MATHEMATICA

Select[Range[42*10^5], AllTrue[30#+{1, 7, 13, 17, 19, 23, 29}, PrimeQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Mar 10 2018 *)

PROG

(MAGMA) [ n: n in [5..70000000 by 7] | forall{ q: q in [1, 7, 13, 17, 19, 23, 29] | IsPrime(30*n+q) } ]; // Klaus Brockhaus, Feb 24 2011

CROSSREFS

Cf. A005776, A007775, A076205, A100418, A100420-A100423.

Sequence in context: A017752 A282478 A264323 * A328355 A264135 A264020

Adjacent sequences:  A100416 A100417 A100418 * A100420 A100421 A100422

KEYWORD

easy,nonn

AUTHOR

Ferenc Adorjan (fadorjan(AT)freemail.hu), Nov 19 2004

EXTENSIONS

Edited by Don Reble, Nov 17 2005

STATUS

approved

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Last modified January 22 19:16 EST 2020. Contains 331153 sequences. (Running on oeis4.)