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Search: id:A028942
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| A028942 |
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Numerator of y coordinate of n*P where P is generator for rational points on curve y^2+y = x^3-x. |
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+0
1
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| 0, 0, 1, 3, 5, -14, -8, 69, 435, 2065, 3612, -28888, 43355, 2616119, 28076979, -332513754, -331948240, 8280062505, 641260644409, 18784454671297, 318128427505160, -10663732503571536, -66316334575107447, 8938035295591025771
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OFFSET
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0,4
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REFERENCES
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B. Mazur, Arithmetic on curves, Bull. Amer Math. Soc. 14 (1986), 207-259; see p 225.
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FORMULA
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P=(0, 0), 2P=(1, 0), if kP=(a, b) then (k+1)P=(a'=(b^2-a^3)/a^2, b'=1-b*a'/a).
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CROSSREFS
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Sequence in context: A110407 A062698 A128341 this_sequence A074378 A026645 A026667
Adjacent sequences: A028939 A028940 A028941 this_sequence A028943 A028944 A028945
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KEYWORD
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sign
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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