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A179913
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Primes with five embedded primes.
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2
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1237, 1319, 1367, 1523, 1571, 1723, 1753, 1979, 1997, 2131, 2179, 2239, 2273, 2293, 2297, 2357, 2377, 2383, 2389, 2417, 2437, 2473, 2531, 2579, 2593, 2617, 2711, 2731, 2753, 2797, 3119, 3167, 3257, 3271, 3313, 3371, 3547, 3571, 3593, 3617, 3671, 3677
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OFFSET
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1,1
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COMMENTS
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A079066(a(n)) = 5.
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LINKS
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Table of n, a(n) for n=1..42.
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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@ 510, f@# == 6 &]
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PROG
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(Haskell)
import Data.List (elemIndices)
a179913 n = a179913_list !! (n-1)
a179913_list = map (a000040 . (+ 1)) $ elemIndices 5 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: A091332 A210515 A122043 * A161868 A145047 A010081
Adjacent sequences: A179910 A179911 A179912 * A179914 A179915 A179916
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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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