OFFSET
1,1
COMMENTS
Recursive twin-prime generating sequence.
For the twin primes so generated see A087901.
REFERENCES
H. Dubner, "Recursive Prime Generating Sequences", Table 6 pp. 175 Journal of Recreational Mathematics 29(3)1998 Baywood NY.
LINKS
Robert Israel, Table of n, a(n) for n = 1..210
MAPLE
R:= 2; s:= 2: count:= 1:
for r from 3 while count < 100 do
if isprime(s*r+1) and isprime(s*r-1) then
count:= count+1; R:= R, r; s:= s*r;
fi;
od:
R; # Robert Israel, Jun 11 2025
CROSSREFS
KEYWORD
nonn
AUTHOR
Lekraj Beedassy, Oct 14 2003
STATUS
approved
