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A042876 Numerators of continued fraction convergents to sqrt(970). 2
31, 187, 218, 2149, 2367, 4516, 43011, 47527, 328173, 20394253, 122693691, 143087944, 1410485187, 1553573131, 2964058318, 28230097993, 31194156311, 215395035859, 13385686379569, 80529513313273, 93915199692842, 925766310548851, 1019681510241693 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,656346,0,0,0,0,0,0,0,0,1).

FORMULA

G.f.: -(x^17 -31*x^16 +187*x^15 -218*x^14 +2149*x^13 -2367*x^12 +4516*x^11 -43011*x^10 +47527*x^9 +328173*x^8 +47527*x^7 +43011*x^6 +4516*x^5 +2367*x^4 +2149*x^3 +218*x^2 +187*x +31) / (x^18 +656346*x^9 -1). - Colin Barker, Dec 25 2013

MATHEMATICA

Numerator[Convergents[Sqrt[970], 30]] (* Vincenzo Librandi, Dec 08 2013 *)

CROSSREFS

Cf. A042877, A040938.

Sequence in context: A243522 A227523 A055788 * A042878 A165130 A229145

Adjacent sequences:  A042873 A042874 A042875 * A042877 A042878 A042879

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 25 2013

STATUS

approved

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Last modified February 21 01:29 EST 2019. Contains 320364 sequences. (Running on oeis4.)