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 A005484 Numerators of convergents to cube root of 7. (Formerly M2127) 2
 1, 2, 21, 44, 725, 1494, 2219, 10370, 22959, 33329, 722868, 756197, 2991459, 15713492, 18704951, 53123394, 71828345, 124951739, 321731823, 3664001792, 18641740783, 22305742575, 85558968508, 107864711083, 301288390674, 8242651259281, 33271893427798, 41514544687079 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 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 = 1..1000 MATHEMATICA Numerator[Convergents[7^(1/3), 40]] (* Vincenzo Librandi, Sep 08 2013 *) PROG (PARI) a(n)= contfracpnqn(contfrac(7^(1/3), n))[1, 1]; \\ Michel Marcus, Sep 07 2013 CROSSREFS Cf. A005482, A005485. Sequence in context: A215753 A041049 A224346 * A330201 A042455 A245546 Adjacent sequences:  A005481 A005482 A005483 * A005485 A005486 A005487 KEYWORD nonn,frac AUTHOR EXTENSIONS More terms from Michel Marcus, Sep 07 2013 Inserted a(27) by Vincenzo Librandi, Sep 08 2013 STATUS approved

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Last modified June 15 13:47 EDT 2021. Contains 345048 sequences. (Running on oeis4.)