OFFSET
1,3
COMMENTS
Number of digits of the twin primes of the form j*P(i)# - 1 and j*P(i)# + 1 with 0 < j < P(i+1), P(i)= i rank primes, P(i)# = primorial of P(i) (A002110).
EXAMPLE
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Pierre CAMI, Sep 25 2003
EXTENSIONS
Edited by Ray Chandler, Oct 05 2003
STATUS
approved