A262993 Decimal expansion of 2^e (Froda's constant).

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

Offset

1,1

Comments

Named after the Romanian mathematician Alexandru Froda (1894-1973), who proved that this constant is irrational (1963). - Amiram Eldar, May 27 2023

Links

Table of n, a(n) for n=1..99.

Alexandre Froda, Sur l'irrationalité du nombre 2^e, Atti. Accad. Naz. Lincei Rend. Cl. Sci. Fis. Mat. Natur., Series 8, Vol. 35 (1963), pp. 472-478.

Simon Plouffe, The Froda constant.

Example

6.58088599101792097085154240388648649157307743834...

Mathematica

RealDigits[2^E, 10, 99][[1]] (* Jean-François Alcover, Dec 04 2016 *)

Prog

(PARI) default(realprecision, 50080); x=2^exp(1); for(i=1, 100, d=floor(x); x=(x-d)*10; print1(d, ", "))
(MATLAB) 2^exp(1) \\ Altug Alkan, Jan 17 2016

Crossrefs

Cf. A001113.

Sequence in context: A019324 A093457 A195446 * A201764 A375194 A147313

Adjacent sequences: A262990 A262991 A262992 * A262994 A262995 A262996

Keyword

nonn,cons

Author

Felix Fröhlich, Jan 17 2016

Status

approved