A059184 Engel expansion of 1/log(10) = 0.434294....

3, 4, 5, 18, 27, 37, 415, 445, 1812, 2475, 3928, 6707, 14673, 65863, 89033, 265841, 1293955, 1525697, 2541166, 7906280, 107955268, 154190828, 887303031, 1767107652, 3068165143, 3209500563, 92762706640, 147991352023

Offset

1,1

Comments

Cf. A006784 for definition of Engel expansion.

References

F. Engel, Entwicklung der Zahlen nach Stammbruechen, Verhandlungen der 52. Versammlung deutscher Philologen und Schulmaenner in Marburg, 1913, pp. 190-191.

Links

G. C. Greubel, Table of n, a(n) for n = 1..1000

F. Engel, Entwicklung der Zahlen nach Stammbruechen, Verhandlungen der 52. Versammlung deutscher Philologen und Schulmaenner in Marburg, 1913, pp. 190-191. English translation by Georg Fischer, included with his permission.

P. Erdős and Jeffrey Shallit, New bounds on the length of finite Pierce and Engel series, Sem. Theor. Nombres Bordeaux (2) 3 (1991), no. 1, 43-53.

Index entries for sequences related to Engel expansions

Mathematica

EngelExp[A_, n_] := Join[Array[1 &, Floor[A]], First@Transpose@
NestList[{Ceiling[1/Expand[#[[1]] #[[2]] - 1]], Expand[#[[1]] #[[2]] - 1]/1} &, {Ceiling[1/(A - Floor[A])], (A - Floor[A])/1}, n - 1]];
EngelExp[N[1/Log[10], 7!], 100] (* Modified by G. C. Greubel, Dec 27 2016 *)

Crossrefs

Cf. A002285 (1/log(10)).

Sequence in context: A224890 A263810 A249541 * A161961 A161474 A247573

Adjacent sequences: A059181 A059182 A059183 * A059185 A059186 A059187

Keyword

nonn,easy,nice

Author

Mitch Harris

Status

approved