The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A163960 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A163960

Decimal expansion of 2*(sqrt(2) - 1).
(history; published version)

#21 by Amiram Eldar at Mon Dec 02 01:00:57 EST 2024

STATUS

editing

proposed

#20 by Amiram Eldar at Mon Dec 02 00:27:36 EST 2024

FORMULA

Equals Sum_{k>=1} (-1)^(k+1)/A084158(k). - Amiram Eldar, Dec 02 2024

CROSSREFS

Cf. A084158, A156035, A195284.

STATUS

approved

editing

#19 by R. J. Mathar at Wed Jan 25 06:28:28 EST 2023

STATUS

editing

approved

#18 by R. J. Mathar at Wed Jan 25 06:28:10 EST 2023

CROSSREFS

Cf. A010466, A086178, A156035, A157258, A195284.

Essentially the same digit sequence as A010466, A086178, A090488 and A157258.

STATUS

approved

editing

#17 by Michael De Vlieger at Fri May 06 07:35:01 EDT 2022

STATUS

reviewed

approved

#16 by Michel Marcus at Fri May 06 04:15:37 EDT 2022

STATUS

proposed

reviewed

#15 by Amiram Eldar at Fri May 06 03:46:41 EDT 2022

STATUS

editing

proposed

#14 by Amiram Eldar at Fri May 06 02:51:51 EDT 2022

REFERENCES

J. M. Steele, Probability Theory and Combinatorial Optimization, SIAM , 1997, p. 3.

CROSSREFS

Cf. A010466, A086178, A156035, A157258, A195284.

#13 by Amiram Eldar at Fri May 06 02:51:31 EDT 2022

FORMULA

Equals Sum_{k>=0} (-1)^k * binomial(2*k,k)/((k+1) * 4^k). - Amiram Eldar, May 06 2022

STATUS

approved

editing

#12 by Jon E. Schoenfield at Sun Aug 13 21:55:06 EDT 2017

STATUS

editing

approved