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A041879
Denominators of continued fraction convergents to sqrt(461).
2
1, 2, 17, 172, 189, 361, 550, 911, 1461, 2372, 3833, 6205, 65883, 533269, 1132421, 48094951, 97322323, 826673535, 8364057673, 9190731208, 17554788881, 26745520089, 44300308970, 71045829059, 115346138029, 186391967088, 301738105117, 3203773018258
OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48628220, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
FORMULA
a(n) = 48628220*a(n-15) + a(n-30) for n>29. - Vincenzo Librandi, Dec 26 2013
MATHEMATICA
Denominator[Convergents[Sqrt[461], 30]] (* Vincenzo Librandi, Dec 26 2013 *)
PROG
(PARI)
N=40;
default(realprecision, 2*N+11);
L=contfracpnqn(contfrac(sqrt(461)), N)[2, ];
vector(#L-1, j, L[j+1])
\\ Joerg Arndt, Dec 27 2013
CROSSREFS
Cf. A041878.
Sequence in context: A003419 A126109 A046909 * A011550 A102023 A212833
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Dec 26 2013
STATUS
approved