A362941 Numbers of the form (p+1)*(p+3) where (p,p+2) is a twin prime pair (cf. A001359).

24, 48, 168, 360, 960, 1848, 3720, 5328, 10608, 11880, 19320, 22800, 32760, 37248, 39600, 52440, 58080, 73440, 80088, 97968, 121800, 177240, 187488, 214368, 273528, 326040, 361200, 383160, 413448, 436920, 657720, 677328, 687240, 737880, 779688, 1042440, 1067088, 1104600

Offset: 1

Author

N. J. A. Sloane, Sep 10 2023, following a suggestion from Jean-Claude Babois

Keywords

• nonn

Links

• Michael De Vlieger, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A001359, A108604.

Programs

Mathematica

((# + 1)*(# + 3)) & /@ Select[Prime[Range[200]], PrimeQ[# + 2] &] (* Amiram Eldar, Sep 10 2023 *)

Formula

a(n) = A108604(n) - 1. - Amiram Eldar, Sep 10 2023