OFFSET
1,1
LINKS
Harry J. Smith, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Range[10^6], PrimeQ[10^9# + 1] && PrimeQ[10^9# + 3] && PrimeQ[10^9# + 7] && PrimeQ[10^9# + 9] &]
PROG
(PARI) { n=0; for (m=1, 10^9, b=10^9*m; if(isprime(b + 1) && isprime(b + 3) && isprime(b + 7) && isprime(b + 9), write("b064968.txt", n++, " ", m); if (n==1000, return)) ) } \\ Harry J. Smith, Oct 01 2009
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Oct 29 2001
STATUS
approved