

A053095


Number of primes having exactly same digits as appear in first n primes.


2




OFFSET

1,4


COMMENTS

a(n) = 0 if sum of digits is a multiple of three (see A103208).  Chandler


LINKS

Table of n, a(n) for n=1..10.


EXAMPLE

a(4)=8 because the first three prime n, concatenated, are 2+3+5+7 or 2357. There are 8 prime arrangements: 2357 2753 3257 3527 5237 5273 7253 7523.


CROSSREFS

Cf. A054260, A053160, A053161, A103208.
Sequence in context: A163444 A190975 A244831 * A099335 A194930 A132506
Adjacent sequences: A053092 A053093 A053094 * A053096 A053097 A053098


KEYWORD

base,nonn,more


AUTHOR

Enoch Haga, Mar 19 2000


EXTENSIONS

a(7)a(9) from Ray Chandler, Apr 07 2010
a(10) from Ray Chandler, Apr 08 2010


STATUS

approved



