OFFSET
1,2
COMMENTS
Numbers k such that number of primes between k^2 and (k+1)^2 is equal to number of primes between (k+1)^2 and (k+2)^2.
Conjecture: the sequence is infinite.
LINKS
Zak Seidov and Amiram Eldar, Table of n, a(n) for n = 1..3000 (terms 1..2000 from Zak Seidov)
MATHEMATICA
Flatten[Position[Partition[PrimePi[Range[1000]^2], 3, 1], _?(Length[Union[ Differences[#]]]==1&), {1}, Heads->False]] (* Harvey P. Dale, Jun 17 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Sep 16 2008, Sep 17 2008
STATUS
approved