(OEIS A065478), where is the th prime (Finch 2003).
Let
and
be nonzero integers such that for integers and not both zero. Let be the set of primes for which for some nonnegative
integer.
Assuming the generalized Riemann hypothesis,
Moree and Stevenhagen (2000) showed that the density of relative to the primes is a positive rational
number times ,
extending the restricted case studied by Stephens (1976).
is the 
th prime (Finch 2003).
and 
be nonzero integers such that 
for integers 
and 
not both zero. Let 
be the set of primes 
for which 
for some nonnegative
integer 
.
Assuming the generalized Riemann hypothesis,
Moree and Stevenhagen (2000) showed that the density of 
relative to the primes is a positive rational
number times 
,
extending the restricted case studied by Stephens (1976).
