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A179922 Primes with twelve embedded primes. 3
113171, 113173, 113797, 123719, 153137, 179719, 199739, 213173, 229373, 231197, 233113, 233713, 236779, 237331, 237619, 237971, 241973, 259397, 317971, 327193, 343373, 353173, 361373, 372719, 373379, 382373, 432713, 519733, 521137, 521317 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A079066(a(n)) = 12.

LINKS

Table of n, a(n) for n=1..30.

MATHEMATICA

f[n_] := Block[ {id = IntegerDigits@n}, len = Length@ id - 1; Count[ PrimeQ@ Union[ FromDigits@# & /@ Flatten[ Table[ Partition[ id, k, 1], {k, len}], 1]], True] + 1]; Select[ Prime@ Range@ 43150, f@# == 13 &]

PROG

(Haskell)

import Data.List (elemIndices)

a179922 n = a179922_list !! (n-1)

a179922_list = map (a000040 . (+ 1)) $ elemIndices 12 a079066_list

-- Reinhard Zumkeller, Jul 19 2011

CROSSREFS

Cf. A039996, A079397, A033274, A034844, A092621, A179909 - A179919, A033274.

Sequence in context: A303999 A252036 A103113 * A122511 A172549 A172589

Adjacent sequences:  A179919 A179920 A179921 * A179923 A179924 A179925

KEYWORD

base,nonn

AUTHOR

Robert G. Wilson v, Aug 01 2010

STATUS

approved

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Last modified May 19 02:45 EDT 2019. Contains 323377 sequences. (Running on oeis4.)