|
|
A160751
|
|
a(n) is the smallest n-digit prime formed by appending a digit to a(n-1); a(1)=6.
|
|
3
|
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
There is no prime a(5) since all the integers from 61310 to 61319 are composite.
|
|
LINKS
|
|
|
MAPLE
|
A160751 := proc(n) option remember ; local d; if n =1 then 6; else for d from 1 to 9 by 2 do if isprime(10*procname(n-1)+d) then RETURN( 10*procname(n-1)+d ) ; fi; od: RETURN(-1) ; fi; end: seq(A160751(n), n=1..10) ; # R. J. Mathar, May 26 2009
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,easy,fini,full,nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|