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Revision History for A139347 (Underlined text is an addition; strikethrough text is a deletion.)

Showing entries 1-10 | older changes
A139347 Decimal expansion of negated tangent of the golden ratio. That is, the decimal expansion of -tan((1+sqrt(5))/2).
(history; published version)
#20 by Michael De Vlieger at Mon Feb 07 08:15:51 EST 2022
STATUS

proposed

approved

#19 by Jon E. Schoenfield at Mon Feb 07 04:10:30 EST 2022
STATUS

editing

proposed

#18 by Jon E. Schoenfield at Mon Feb 07 04:10:20 EST 2022
EXTENSIONS

AddedSign signadded into definition by R. J. Mathar, Feb 05 2009

STATUS

reviewed

editing

#17 by Joerg Arndt at Mon Feb 07 02:44:02 EST 2022
STATUS

proposed

reviewed

#16 by Amiram Eldar at Mon Feb 07 02:40:34 EST 2022
STATUS

editing

proposed

#15 by Amiram Eldar at Mon Feb 07 02:33:43 EST 2022
LINKS

<a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>>.

FORMULA

Equals tan(A001622).

EXAMPLE

tan(A001622) = --21.15380115380078249327464858628117032582559788124367464826...

MATHEMATICA

RealDigits[Tan[GoldenRatio], 10, 100][[1]] (* Amiram Eldar, Feb 07 2022 *)

#14 by Amiram Eldar at Mon Feb 07 02:32:18 EST 2022
FORMULA

From Amiram Eldar, Feb 07 2022: (Start)

Equals 1/A139348.

Equals A139345/A139346. (End)

CROSSREFS

Cf. A001622, A094214, A104457, A098317, A002390, A139339, A139340, A139341, A139342, A139345, A139346, A139348.

STATUS

approved

editing

#13 by Charles R Greathouse IV at Tue May 14 21:21:38 EDT 2019
STATUS

editing

approved

#12 by Charles R Greathouse IV at Tue May 14 21:20:29 EDT 2019
LINKS

<a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>

STATUS

approved

editing

#11 by Charles R Greathouse IV at Mon May 13 11:48:32 EDT 2019
STATUS

editing

approved

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Last modified August 29 19:56 EDT 2024. Contains 375518 sequences. (Running on oeis4.)