OFFSET
1,2
COMMENTS
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
MATHEMATICA
Reap[Do[If[PrimeQ[p=2*k^2+11]&&PrimeQ[2*(p)^2+11], Sow[k]], {k, 10^3}]][[2, 1]]
bprQ[n_]:=Module[{p=2n^2+11}, AllTrue[{p, 2p^2+11}, PrimeQ]]; Select[Range[ 1000], bprQ] (* Harvey P. Dale, Jun 16 2022 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Jul 25 2015
STATUS
approved