A374829 Decimal expansion of 5*(5 - 3*A136141)/36.

3, 7, 2, 2, 9, 5, 8, 3, 2, 3, 4, 0, 3, 6, 3, 1, 4, 1, 1, 6, 7, 6, 2, 4, 6, 6, 9, 5, 0, 4, 4, 6, 8, 4, 4, 6, 2, 6, 9, 9, 6, 8, 8, 8, 7, 7, 4, 3, 1, 1, 6, 9, 2, 4, 3, 1, 4, 8, 5, 8, 5, 8, 3, 0, 4, 5, 8, 1, 5, 6, 8, 2, 5, 7, 3, 9, 3, 0, 5, 2, 8, 6, 8, 0, 3, 6, 1, 6, 2, 8, 2, 6, 8, 0, 6, 0, 7, 7, 0, 1

Offset: 0

Author

Stefano Spezia, Jul 21 2024

Keywords

• nonn
• cons

Comments

Lower bound of Artin's constant A005596.

Examples

			0.3722958323403631411676246695044684462699688877431169243...
		

Links

• Rafael Jakimczuk, Numbers of the form p-1 where p is prime, July 2024. See pp. 16-17.

Crossrefs

Cf. A005596, A136141, A374830.

Programs

PARI

5*(5 - 3*sumeulerrat(1/(p*(p-1))))/36 \\ Amiram Eldar, Aug 20 2024

Formula

Equals (1/2)*(5/6)*(1 - (A136141 - (1/2 + 1/6))) (see Jakimczuk).

Equals (153/125)*A374830.