

A265043


The nth Champernowne prime (A176942) is found by concatenating the successive digits of the numbers 1,2,3,...,a(n) and possibly dropping some of final digits of a(n).


2




OFFSET

1,1


LINKS

Table of n, a(n) for n=1..7.


EXAMPLE

The third Champernowne prime A176942(3) = 123456789101112131415161 is obtained by concatenating the digits of the numbers 1,2,3,4,...,17, and then dropping the final digit; thus a(3) = 17.


CROSSREFS

See A176942 for the Champernowne primes, A071620 for number of digits.
See also A007908.
Sequence in context: A063096 A270819 A031183 * A158871 A247626 A247627
Adjacent sequences: A265040 A265041 A265042 * A265044 A265045 A265046


KEYWORD

nonn,more,base


AUTHOR

N. J. A. Sloane, Dec 26 2015


STATUS

approved



