A294568 Decimal expansion of 1/18779.

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, 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, 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

Offset

0,5

Comments

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

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

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

Links

Table of n, a(n) for n=0..104.

Charles Donald Briddell, The Meaning of Structure: The Structural Approach to Understanding Nature, Proceedings of the NPA, Volume 7, pp. 53-61, 2010.

Wikipedia, Fine-structure constant

Example

0.00005325097183023590180520794504499707119654933702540071356302252516...

Prog

(Magma) n:=1/18779; [0, 0, 0, 0] cat Reverse(Intseq(Floor(10^105*n)));
(PARI) { x=1/18779*10; for(n=1, 100, d=floor(x); x=(x-d)*10; print1(d, ", ")) } \\ Felix Fröhlich, Nov 02 2017

Crossrefs

Cf. A003673, A005600, A021141, A254277.

Sequence in context: A351061 A159935 A165102 * A290349 A009661 A023576

Adjacent sequences: A294565 A294566 A294567 * A294569 A294570 A294571

Keyword

nonn,cons,easy

Author

Arkadiusz Wesolowski, Nov 02 2017

Status

approved