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A294568 Decimal expansion of 1/18779. 0

%I #16 Sep 08 2022 08:46:20

%S 0,0,0,0,5,3,2,5,0,9,7,1,8,3,0,2,3,5,9,0,1,8,0,5,2,0,7,9,4,5,0,4,4,9,

%T 9,7,0,7,1,1,9,6,5,4,9,3,3,7,0,2,5,4,0,0,7,1,3,5,6,3,0,2,2,5,2,5,1,6,

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

%N Decimal expansion of 1/18779.

%C The value of the fine-structure constant is given approximately by the square root of this constant.

%C Also an approximate value of the classical electron radius, expressed in atomic units.

%C Briddell noted that the integer 18779 can be derived from the Sierpinski triangle (see the Briddell's paper, page 60).

%H Charles Donald Briddell, <a href="http://worldnpa.org/abstracts/abstracts_5246.pdf">The Meaning of Structure: The Structural Approach to Understanding Nature</a>, Proceedings of the NPA, Volume 7, pp. 53-61, 2010.

%H Wikipedia, <a href="http://en.wikipedia.org/wiki/Fine_Structure_Constant">Fine-structure constant</a>

%e 0.00005325097183023590180520794504499707119654933702540071356302252516...

%o (Magma) n:=1/18779; [0, 0, 0, 0] cat Reverse(Intseq(Floor(10^105*n)));

%o (PARI) { x=1/18779*10; for(n=1, 100, d=floor(x); x=(x-d)*10; print1(d, ", ")) } \\ _Felix Fröhlich_, Nov 02 2017

%Y Cf. A003673, A005600, A021141, A254277.

%K nonn,cons,easy

%O 0,5

%A _Arkadiusz Wesolowski_, Nov 02 2017

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)