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A041771 Denominators of continued fraction convergents to sqrt(406). 2
1, 6, 7, 20, 87, 629, 716, 3493, 4209, 32956, 136033, 305022, 441055, 2951352, 118495135, 713922162, 832417297, 2378756756, 10347444321, 74810867003, 85158311324, 415444112299, 500602423623, 3919661077660, 16179246734263, 36278154546186 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

FORMULA

a(n) = 118936190*a(n-14) - a(n-28) for n>27, - Vincenzo Librandi, Dec 24 2013

MATHEMATICA

Denominator[Convergents[Sqrt[406], 30]] (* Harvey P. Dale, Sep 15 2011 *)

CROSSREFS

Cf. A041770.

Sequence in context: A287913 A078980 A041076 * A042757 A257312 A062369

Adjacent sequences:  A041768 A041769 A041770 * A041772 A041773 A041774

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Dec 24 2013

STATUS

approved

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Last modified December 4 02:18 EST 2020. Contains 338921 sequences. (Running on oeis4.)