cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A104287 Decimal expansion of log base phi of 2.

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%I A104287 #21 Aug 13 2025 03:13:05
%S A104287 1,4,4,0,4,2,0,0,9,0,4,1,2,5,5,6,4,7,9,0,1,7,5,5,1,4,9,9,5,8,7,8,6,3,
%T A104287 8,0,2,4,5,8,6,0,4,1,4,2,6,8,4,0,5,6,0,8,1,6,4,5,4,4,1,7,2,9,5,6,6,5,
%U A104287 1,3,2,8,4,3,5,2,9,9,0,3,6,7,2,7,9,5,2,8,2,2,0,4,9,7,3,5,7,5,9,1,6,3,1,2,7
%N A104287 Decimal expansion of log base phi of 2.
%C A104287 The fractal dimension of the goldpoint snowflake (Turner, 2003). - _Amiram Eldar_, Jan 11 2022
%D A104287 Krassimir Atanassova, Vassia Atanassova, Anthony Shannon and John Turner, New Visual Perspectives on Fibonacci Numbers, World Scientific, 2002, p. 218.
%H A104287 Greg Kuperberg, <a href="https://www.youtube.com/watch?v=_quPWFo7YPc">Breaking the cubic barrier in the Solovay-Kitaev algorithm</a>, QIP2023 video (2023).
%H A104287 J. C. Turner, <a href="https://web.archive.org/web/2024*/https://www.fq.math.ca/Scanned/41-1/turner.pdf">Some fractals in goldpoint geometry</a>, The Fibonacci Quarterly, Vol. 41, No. 1 (2003), pp. 63-71.
%H A104287 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%F A104287 Equals log(2) / log((sqrt(5)+1)/2).
%F A104287 Equals A002162/A002390. - _Amiram Eldar_, Nov 24 2020
%e A104287 1.4404200904125564790175514995878638024586041426840560816454417295665...
%t A104287 RealDigits[Log[2]/Log[GoldenRatio], 10, 100][[1]] (* _Amiram Eldar_, Nov 24 2020 *)
%o A104287 (PARI) log(2)/log((sqrt(5)+1)/2) \\ _Charles R Greathouse IV_, May 15 2019
%Y A104287 Cf. A001622, A002162, A002390, A371176.
%K A104287 cons,nonn,easy
%O A104287 1,2
%A A104287 Bryan Jacobs (bryanjj(AT)gmail.com), Feb 28 2005