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A041871 Denominators of continued fraction convergents to sqrt(457). 2
1, 2, 3, 5, 8, 45, 98, 1319, 1417, 5570, 6987, 33518, 40505, 74023, 336597, 410620, 1568457, 1979077, 27296458, 56571993, 310156423, 366728416, 676884839, 1043613255, 2764111349, 117136289913, 237036691175, 354172981088, 591209672263, 945382653351 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 118179903168, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
FORMULA
a(n) = 118179903168*a(n-25) + a(n-50) for n>49. - Vincenzo Librandi, Dec 26 2013
MATHEMATICA
Denominator[Convergents[Sqrt[457], 30]] (* Vincenzo Librandi, Dec 26 2013 *)
CROSSREFS
Cf. A041870.
Sequence in context: A268480 A128485 A042471 * A061249 A042237 A042937
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Dec 26 2013
STATUS
approved

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)