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A007676 Numerators of convergents to e.
(Formerly M0869)
13
2, 3, 8, 11, 19, 87, 106, 193, 1264, 1457, 2721, 23225, 25946, 49171, 517656, 566827, 1084483, 13580623, 14665106, 28245729, 410105312, 438351041, 848456353, 14013652689, 14862109042, 28875761731, 534625820200, 563501581931, 1098127402131, 22526049624551 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Same as A113873 without its first two terms. - Jonathan Sondow (jsondow(AT)alumni.princeton.edu), Aug 16 2006

REFERENCES

CRC Standard Mathematical Tables and Formulae, 30th ed. 1996, p. 88.

W. J. LeVeque, Fundamentals of Number Theory. Addison-Wesley, Reading, MA, 1977, p. 240.

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

J. Sondow, A geometric proof that e is irrational and a new measure of its irrationality, Amer. Math. Monthly 113 (2006) 637-641.

LINKS

T. D. Noe, Table of n, a(n) for n=1..200

J. Sondow, A geometric proof that e is irrational and a new measure of its irrationality

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

Eric Weisstein's World of Mathematics, Sultan's Dowry Problem

MAPLE

Digits := 60: convert(evalf(E), confrac, 50, 'cvgts'): cvgts;

MATHEMATICA

Numerator[Convergents[E, 30]] (* T. D. Noe, Oct 12 2011 *)

CROSSREFS

Cf. A007677.

Sequence in context: A041893 A206241 A113873 * A042443 A042263 A153439

Adjacent sequences:  A007673 A007674 A007675 * A007677 A007678 A007679

KEYWORD

nonn,easy,nice,frac

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Robert G. Wilson v (rgwv(AT)rgwv.com)

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Last modified February 11 21:16 EST 2012. Contains 205347 sequences.