A168469 Numbers of the form p^2 - q^2, p, q primes, p > q, with repetitions.

5, 16, 21, 24, 40, 45, 48, 72, 72, 96, 112, 117, 120, 120, 120, 144, 160, 165, 168, 168, 168, 192, 240, 240, 240, 240, 264, 280, 285, 288, 312, 312, 312, 336, 352, 357, 360, 360, 408, 408, 408, 432, 432, 480, 480, 480, 504, 520, 525, 528, 528, 552, 552, 552

Offset

1,1

Links

Table of n, a(n) for n=1..54.

Mathematica

Take[Sort[Last[#]^2-First[#]^2&/@Subsets[Prime[Range[40]], {2}]], 60] (* Harvey P. Dale, Jul 22 2012 *)

Crossrefs

Cf. A124865 Numbers of the form p^2 - q^2, p, q primes, p > q.

Sequence in context: A269969 A057281 A204920 * A124865 A090781 A191264

Adjacent sequences: A168466 A168467 A168468 * A168470 A168471 A168472

Keyword

nonn

Author

Zak Seidov, Nov 26 2009

Status

approved