A090862 Smallest b > 10 such that the decimal representation of the n-th prime is not a prime in base b representation.

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

Offset

5,1

Comments

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

Links

Table of n, a(n) for n=5..73.

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: A240453 A052192 A110733 * A291498 A290656 A256077

Adjacent sequences: A090859 A090860 A090861 * A090863 A090864 A090865

Keyword

nonn,base

Author

Reinhard Zumkeller, Feb 12 2004

Status

approved