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A006270 Denominators of a continued fraction for (1 + sqrt(5))/2.
(Formerly M3170)
0
1, 3, 72, 439128, 84722519069640072, 608130213374088941214747405817720857404971722895128 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

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

LINKS

Table of n, a(n) for n=0..5.

Jeffrey Shallit, Predictable regular continued cotangent expansions, J. Res. Nat. Bur. Standards Sect. B 80B (1976), no. 2, 285-290.

CROSSREFS

For numerators see A002814.

Sequence in context: A156908 A182517 A135866 * A139888 A079594 A089922

Adjacent sequences:  A006267 A006268 A006269 * A006271 A006272 A006273

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 22 20:33 EST 2014. Contains 252369 sequences.