A005485 - OEIS

A005485

Denominators of continued fraction convergents to cube root of 7.
(Formerly M4781)

1, 1, 11, 23, 379, 781, 1160, 5421, 12002, 17423, 377885, 395308, 1563809, 8214353, 9778162, 27770677, 37548839, 65319516, 168187871, 1915386097, 9745118356, 11660504453, 44726631715, 56387136168, 157500904051, 4308911545545, 17393147086231, 21702058631776

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OFFSET

0,3

REFERENCES

D. H. Lehmer, Guide to Tables in the Theory of Numbers. Bulletin No. 105, National Research Council, Washington, DC, 1941, p. 67.

P. Seeling, Verwandlung der irrationalen Groesse ... in einen Kettenbruch, Archiv. Math. Phys., 46 (1866), 80-120.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..999

MATHEMATICA

Denominator[Convergents[7^(1/3), 40]] (* Vincenzo Librandi, Sep 08 2013 *)

PROG