The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A005597

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A005597

Decimal expansion of the twin prime constant C_2 = Product_{ p prime >= 3 } (1-1/(p-1)^2).
(history; published version)

#115 by Russ Cox at Sun Jan 05 19:51:33 EST 2025

LINKS

Paul S. Bruckman, <a href="https://fq.math.ca/Scanned/39-4/advanced39-4.pdf">Problem H-576</a>, Advanced Problems and Solutions, The Fibonacci Quarterly, Vol. 39, No. 4 (2001), p. 379; <a href="https://web.archive.org/web/2024*/https://www.fq.math.ca/Scanned/40-4/advanced40-4.pdf">General IZE</a>, Solution to Problem H-576 by the proposer, ibid., Vol. 40, No. 4 (2002), pp. 383-384.

Discussion

Sun Jan 05

19:51

OEIS Server: https://oeis.org/edit/global/3012

#114 by Michael De Vlieger at Sun Dec 01 10:03:59 EST 2024

STATUS

reviewed

approved

#113 by Joerg Arndt at Sun Dec 01 09:37:26 EST 2024

STATUS

proposed

reviewed

#112 by Stefano Spezia at Sun Dec 01 09:34:58 EST 2024

STATUS

editing

proposed

#111 by Stefano Spezia at Sun Dec 01 07:48:33 EST 2024

REFERENCES

Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, Vol. 94, Cambridge University Press, 2003, pp. 84-93, 133.

STATUS

approved

editing

#110 by N. J. A. Sloane at Sun Sep 22 18:22:44 EDT 2024

STATUS

proposed

approved

#109 by Stefano Spezia at Sun Sep 22 15:48:02 EDT 2024

STATUS

editing

proposed

#108 by Stefano Spezia at Sun Sep 22 13:25:42 EDT 2024

REFERENCES

R. K. Guy, Unsolved Problems in Number Theory, Section A8.

STATUS

approved

editing

#107 by Charles R Greathouse IV at Mon Apr 03 10:36:09 EDT 2023

LINKS

C. K. Caldwell, The Prime Glossary, <a href="httphttps://primes.utmt5k.eduorg/glossary/page.php?sort=TwinPrimeConstant">twin prime constant</a>.

Discussion

Mon Apr 03

10:36

OEIS Server: https://oeis.org/edit/global/2966

#106 by N. J. A. Sloane at Fri Jan 14 07:31:40 EST 2022

STATUS

proposed

approved