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A179919 Primes with eleven embedded primes. 15

%I

%S 111317,113177,113537,113719,113731,117193,117331,121379,123733,

%T 129719,131797,132173,132971,136733,136739,137197,137321,137339,

%U 137353,137359,137393,137573,152311,172313,173137,173359,174311,193373,211319,213799

%N Primes with eleven embedded primes.

%C A079066(a(n)) = 11.

%t 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@ 19110, f@# == 12 &]

%o (Haskell)

%o import Data.List (elemIndices)

%o a179919 n = a179919_list !! (n-1)

%o a179919_list = map (a000040 . (+ 1)) $ elemIndices 11 a079066_list

%o -- _Reinhard Zumkeller_, Jul 19 2011

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

%K base,nonn

%O 1,1

%A _Robert G. Wilson v_, Aug 01 2010

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Last modified May 21 17:27 EDT 2019. Contains 323444 sequences. (Running on oeis4.)