OFFSET
1,1
COMMENTS
Corresponding values of k: 3, 4, 9, 15, 16, 21, 37, 40, 47, 51, 55, 56, 71, 74, 103 (A216075).
LINKS
Zak Seidov, Table of n, a(n) for n = 1..1000
EXAMPLE
k=3: 2*5-7=3, k=4: 2*7-11=3, k=9: 2*23-29=17.
MATHEMATICA
pr=Prime[Range[1000]]; s=Select[2*Most[pr]-Rest[pr], PrimeQ]
Select[2#[[1]]-#[[2]]&/@Partition[Prime[Range[500]], 2, 1], PrimeQ] (* Harvey P. Dale, Feb 25 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Sep 06 2012
STATUS
approved