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A041438 Numerators of continued fraction convergents to sqrt(235). 2
15, 46, 1395, 4231, 128325, 389206, 11804505, 35802721, 1085886135, 3293461126, 99889719915, 302962620871, 9188768346045, 27869267659006, 845266798116225, 2563669662007681, 77755356658346655, 235829739637047646 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
G.f.: (15 + 46*x + 15*x^2 - x^3) / (1 - 92*x^2 + x^4). - Vincenzo Librandi, Nov 02 2013
MATHEMATICA
Numerator[Convergents[Sqrt[235], 30]] (* or *) CoefficientList[Series[(15 + 46 x + 15 x^2 - x^3)/(1 - 92 x^2 + x^4), {x, 0, 30}], x] (* Vincenzo Librandi, Nov 02 2013 *)
LinearRecurrence[{0, 92, 0, -1}, {15, 46, 1395, 4231}, 20] (* Bruno Berselli, Nov 02 2013 *)
CROSSREFS
Cf. A041439.
Sequence in context: A219885 A042007 A269013 * A045111 A031451 A105572
KEYWORD
nonn,cofr,frac,easy
AUTHOR
STATUS
approved

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Last modified May 21 13:44 EDT 2024. Contains 372738 sequences. (Running on oeis4.)