OFFSET
1,1
LINKS
Pierre CAMI, Table of n, a(n) for n = 1..135
EXAMPLE
p(62178)=776117, 2*776117+3=1552237=p(117814).
p(62179)=776119, 2*776119+3=1552241=p(117815).
p(62180)=776137, 2*776137+3=1552277=p(117816).
p(62181)=776143, 2*776143+3=1552289=p(117817).
MATHEMATICA
cpQ[n_]:=Module[{p1=2Prime[n]+3, p2=2Prime[n+1]+3, p3=2Prime[n+2]+3, p4 = 2Prime[ n+3]+3}, PrimeQ[ p1] &&NextPrime[p1]==p2&&NextPrime[p2]==p3 && NextPrime[p3]==p4]; Select[Range[2236000], cpQ] (* Harvey P. Dale, Aug 15 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Pierre CAMI, Nov 03 2003
EXTENSIONS
Corrected and extended by Ray Chandler, Nov 04 2003
STATUS
approved