Notable Constants
Many well known constants have Euler product expansions.
Twin prime constant:
Landau-Ramanujan constant:
Murata's constant (sequence A065485 in OEIS):
Strongly carefree constant A065472:
Artin's constant A005596:
Landau's totient constant A082695:
Carefree constant A065463:
(with reciprocal) A065489:
Feller-Tornier constant A065493:
Quadratic class number constant A065465:
Totient summatory constant A065483:
Sarnak's constant A065476:
Carefree constant A065464:
Strongly carefree constant A065473:
Stephens' constant A065478:
Barban's constant A175640:
Taniguchi's constant A175639:
Heath-Brown and Moroz constant A118228:
Read more about this topic: Euler Product
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