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A042835 Denominators of continued fraction convergents to sqrt(948). 2
1, 1, 4, 5, 19, 385, 1174, 1559, 5851, 7410, 450451, 457861, 1824034, 2281895, 8669719, 175676275, 535698544, 711374819, 2669823001, 3381197820, 205541692201, 208922890021, 832310362264, 1041233252285, 3956010119119, 80161435634665, 244440317023114 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

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, 0, 456302, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

G.f.: -(x^18 -x^17 +4*x^16 -5*x^15 +19*x^14 -385*x^13 +1174*x^12 -1559*x^11 +5851*x^10 -7410*x^9 -5851*x^8 -1559*x^7 -1174*x^6 -385*x^5 -19*x^4 -5*x^3 -4*x^2 -x -1) / (x^20 -456302*x^10 +1). - Colin Barker, Dec 24 2013

MATHEMATICA

Denominator[Convergents[Sqrt[948], 30]] (* Vincenzo Librandi, Jan 30 2014 *)

CROSSREFS

Cf. A042834, A040917.

Sequence in context: A032319 A346060 A041255 * A193964 A337443 A099897

Adjacent sequences:  A042832 A042833 A042834 * A042836 A042837 A042838

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 24 2013

STATUS

approved

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Last modified August 9 21:08 EDT 2022. Contains 356026 sequences. (Running on oeis4.)