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A179918
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Primes with ten embedded primes.
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2
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23719, 31379, 52379, 111373, 111731, 111733, 112397, 113117, 113167, 113723, 113759, 113761, 115237, 117191, 117431, 121139, 122971, 123113, 123373, 123479, 123731, 124337, 126173, 126317, 127139, 127733, 127739, 127973, 129733, 131171
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OFFSET
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1,1
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COMMENTS
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A079066(a(n)) = 10.
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LINKS
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Table of n, a(n) for n=1..30.
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MATHEMATICA
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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@ 12280, f@# == 11 &]
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PROG
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(Haskell)
import Data.List (elemIndices)
a179918 n = a179918_list !! (n-1)
a179918_list = map (a000040 . (+ 1)) $ elemIndices 10 a079066_list
-- Reinhard Zumkeller, Jul 19 2011
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CROSSREFS
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Cf. A039996, A079397, A033274, A034844, A092621, A179909 - A179919, A033274.
Sequence in context: A118061 A200437 A223342 * A168169 A011254 A226002
Adjacent sequences: A179915 A179916 A179917 * A179919 A179920 A179921
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KEYWORD
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base,nonn
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AUTHOR
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Robert G. Wilson v, Aug 01 2010
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STATUS
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approved
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