OFFSET
1,1
LINKS
David A. Corneth, Table of n, a(n) for n = 1..10000
EXAMPLE
For m=4, (p(2*4) - p(4))/6 = (19 - 7)/6 = 2 = a(1).
For m=5, (p(2*5) - p(5))/6 = (29 - 11)/6 = 3 = a(2).
For m=10, (p(2*10) - p(10))/6 = (71 - 29)/6 = 7 = a(3).
For m=15, (p(2*15) - p(15))/6 = (113 - 47)/6 = 11 = a(4).
For m=16, (p(2*16) - p(16))/6 = (131 - 53)/6 = 13 = a(5), etc.
MATHEMATICA
Select[Table[(Prime[2n]-Prime[n])/6, {n, 1000}], PrimeQ[#]&] (* Harvey P. Dale, Jun 18 2023 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Sep 18 2008
EXTENSIONS
19, 23 inserted, one instance of 331 removed, 577 removed and extended by R. J. Mathar, Oct 04 2008
Definition clarified by Harvey P. Dale, Jun 18 2023
Definition clarified by David A. Corneth, Jun 18 2023
STATUS
approved