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A090862 Smallest b > 10 such that the decimal representation of the n-th prime is not a prime in base b representation. 3
11, 11, 11, 11, 11, 12, 11, 11, 11, 12, 11, 11, 11, 14, 13, 11, 11, 11, 11, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 11, 11, 12, 11, 11, 11, 11, 11, 11, 12, 12, 11, 11, 12, 11, 11, 11, 11, 11, 11, 12, 11, 11, 11, 12, 11, 11 (list; graph; refs; listen; history; internal format)
OFFSET

5,1

COMMENTS

a(A091922(n))=n and a(m)<>n for m < A091922(n).

EXAMPLE

n=10: A000040(10)=29 in base 11 is 2*11^1+9*11^0=31 isprime,

29 in base 12 is 2*12^1+9*12^0=33=3*11, therefore a(10)=12.

CROSSREFS

Cf. A091923, A091924.

Sequence in context: A083971 A052192 A110733 * A100756 A079596 A134036

Adjacent sequences:  A090859 A090860 A090861 * A090863 A090864 A090865

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 12 2004

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Last modified February 16 11:42 EST 2012. Contains 205907 sequences.