The On-Line Encyclopedia of Integer Sequences (OEIS)

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A075600

a(1) = 11 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1).
(history; published version)

#5 by N. J. A. Sloane at Thu Dec 05 19:55:39 EST 2013

AUTHOR

_Amarnath Murthy (amarnath_murthy(AT)yahoo.com), _, Sep 28 2002

Discussion

Thu Dec 05

19:55

OEIS Server: https://oeis.org/edit/global/2075

#4 by Russ Cox at Sat Mar 31 10:22:57 EDT 2012

EXTENSIONS

More terms from _Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), _, Jan 20 2003

Discussion

Sat Mar 31

10:22

OEIS Server: https://oeis.org/edit/global/354

#3 by N. J. A. Sloane at Wed Sep 22 03:00:00 EDT 2004

KEYWORD

base,nonn,new

EXTENSIONS

More terms from Sascha Kurz (sascha.kurz(AT)stud.uni-bayreuth.de), Jan 20 2003

#2 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

KEYWORD

base,nonn,new

EXTENSIONS

More terms from Sascha Kurz (ssascha.kurz(AT)tustud.uni-bsbayreuth.de), Jan 20 2003

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

a(1) = 11 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1).

DATA

11, 1117, 211177, 12111773, 1121117731, 1112111773139, 811121117731399, 18111211177313993, 5181112111773139933, 351811121117731399339, 63518111211177313993399, 11635181112111773139933991

OFFSET

1,1

CROSSREFS

Cf. A075595, A075596, A075597, A075598, A075599, A075601, A075602.

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 28 2002

EXTENSIONS

More terms from Sascha Kurz (s.kurz(AT)tu-bs.de), Jan 20 2003

STATUS

approved