OFFSET
1,3
LINKS
Robert Price, Table of n, a(n) for n = 1..1000
FORMULA
a(n) = (A070854(n)-1)/10^n. - Ray Chandler, Feb 10 2009
EXAMPLE
MATHEMATICA
s={}; Do[k=0; Until[PrimeQ[k*10^n+1], k++]; AppendTo[s, k], {n, 76}]; s (* James C. McMahon, Oct 13 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Alexander Adamchuk, Aug 14 2006
EXTENSIONS
Minor edits by Ray Chandler, Feb 10 2009
STATUS
approved