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A042877 Denominators of continued fraction convergents to sqrt(970). 2
1, 6, 7, 69, 76, 145, 1381, 1526, 10537, 654820, 3939457, 4594277, 45287950, 49882227, 95170177, 906413820, 1001583997, 6915917802, 429788487721, 2585646844128, 3015435331849, 29724564830769, 32740000162618, 62464564993387, 594921085103101, 657385650096488 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

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^16 -6*x^15 +7*x^14 -69*x^13 +76*x^12 -145*x^11 +1381*x^10 -1526*x^9 +10537*x^8 +1526*x^7 +1381*x^6 +145*x^5 +76*x^4 +69*x^3 +7*x^2 +6*x +1) / (x^18 +656346*x^9 -1). - Colin Barker, Dec 25 2013

PROG

Denominator[Convergents[Sqrt[970], 30]] (* Vincenzo Librandi, Jan 31 2014 *)

CROSSREFS

Cf. A042876, A040938.

Sequence in context: A179885 A217548 A256292 * A219517 A232008 A156791

Adjacent sequences:  A042874 A042875 A042876 * A042878 A042879 A042880

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 March 21 21:34 EDT 2019. Contains 321382 sequences. (Running on oeis4.)