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A042192 Numerators of continued fraction convergents to sqrt(621). 2
24, 25, 299, 623, 7152, 7775, 380352, 388127, 4649749, 9687625, 111213624, 120901249, 5914473576, 6035374825, 72303596651, 150642568127, 1729371846048, 1880014414175, 91970063726448, 93850078140623, 1124320923273301, 2342491924687225, 26891732094832776 (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, 15550, 0, 0, 0, 0, 0, -1).

FORMULA

G.f.: -(x^11 -24*x^10 +25*x^9 -299*x^8 +623*x^7 -7152*x^6 -7775*x^5 -7152*x^4 -623*x^3 -299*x^2 -25*x -24) / ((x^4 -25*x^2 +1)*(x^8 +25*x^6 +624*x^4 +25*x^2 +1)). - Colin Barker, Dec 03 2013

MATHEMATICA

Numerator[Convergents[Sqrt[621], 30]] (* Vincenzo Librandi, Nov 18 2013 *)

CROSSREFS

Cf. A042193, A040596.

Sequence in context: A042186 A042188 A042190 * A042194 A042196 A042197

Adjacent sequences:  A042189 A042190 A042191 * A042193 A042194 A042195

KEYWORD

nonn,cofr,frac,easy,less

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 03 2013

STATUS

approved

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Last modified January 20 05:26 EST 2020. Contains 331067 sequences. (Running on oeis4.)