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A216287 Decades whose prime pattern repeat in the next decade. 2
37, 78, 113, 124, 133, 134, 139, 154, 167, 180, 218, 234, 248, 276, 288, 291, 310, 314, 323, 331, 347, 374, 418, 430, 436, 444, 476, 484, 499, 512, 524, 532, 536, 545, 558, 560, 575, 596, 609, 616, 624, 640, 648, 650, 674, 692, 696, 706, 708, 713, 717, 726 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

T. D. Noe, Table of n, a(n) for n = 1..10000

FORMULA

a(n) >> n log^2 n. - Charles R Greathouse IV, Sep 07 2012

a(n) = A219999(n) - 1. - V. Raman, Dec 08 2012

MATHEMATICA

ps0 = {2, 3, 5, 7}; t = {}; Do[ps1 = Select[Range[10 n, 10 n + 9], PrimeQ]; If[Length[ps0] == Length[ps1] && ps0 + 10 == ps1, AppendTo[t, n - 1]];  ps0 = ps1, {n, 2, 1000}]; t (* T. D. Noe, Sep 03 2012 *)

PROG

(PARI) for(i=2, 1000, if(isprime(10*i+1)==isprime(10*i+11)&&isprime(10*i+3)==isprime(10*i+13)&&isprime(10*i+7)==isprime(10*i+17)&&isprime(10*i+9)==isprime(10*i+19), print1(i", "))) /* V. Raman, Dec 08 2012 */

CROSSREFS

Cf. A190639.

Cf. A219999 (upper decade).

Sequence in context: A085959 A145936 A071884 * A216329 A298324 A256585

Adjacent sequences:  A216284 A216285 A216286 * A216288 A216289 A216290

KEYWORD

nonn,base

AUTHOR

V. Raman, Sep 03 2012

STATUS

approved

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Last modified November 15 18:59 EST 2019. Contains 329149 sequences. (Running on oeis4.)