OFFSET
1,1
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..1000
MATHEMATICA
pdQ[n_]:=Module[{prs=Prime[Range[500]], p1}, p1=Select[prs, #<n&]+1; Count[ p1, _?(Divisible[n+1, #]&)]==1]; Select[Prime[Range[500]], pdQ] (* Harvey P. Dale, Dec 24 2013 *)
PROG
(Haskell)
a084198 n = a084198_list !! (n-1)
a084198_list = map a000040 $ filter ((== 1) . a084196) [1..]
-- Reinhard Zumkeller, Jan 06 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, May 18 2003
EXTENSIONS
Corrected by T. D. Noe, Oct 25 2006
STATUS
approved