A175233 Numbers n with property that n and 4*n^2 + 163 are terms in A057605.

2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 14, 16, 19, 24, 27, 28, 29, 33, 39, 45, 49, 58, 64, 69, 74, 80, 81, 82, 89, 97, 104, 110, 113, 114, 121, 127, 128, 132, 141, 150, 154, 160, 165, 169, 171, 180, 193, 197, 208, 212, 217, 220, 222, 227, 232, 233, 244, 253, 264, 269, 275

Offset

1,1

Comments

Numbers n with property that both m=4*n^2 + 163 and p=4*m^2 + 163 are primes.

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Formula

n = 2: m = 4*n^2 + 163 = 179 and p = 4*m^2 + 163 = 128327 are primes.

Mathematica

mpQ[n_]:=Module[{m=4n^2+163}, And@@PrimeQ[{m, 4m^2+163}]]; Select[Range[300], mpQ] (* Harvey P. Dale, Jul 15 2013 *)

Crossrefs

Intersection of A057604 and A057605.

Sequence in context: A347528 A002855 A303234 * A346130 A121229 A286291

Adjacent sequences: A175230 A175231 A175232 * A175234 A175235 A175236

Keyword

nonn

Author

Zak Seidov, Mar 09 2010

Extensions

Edited by Zak Seidov, Mar 17 2010

Status

approved