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A041977
Denominators of continued fraction convergents to sqrt(511).
3
1, 1, 2, 3, 5, 33, 38, 565, 2298, 2863, 62421, 65284, 323557, 4595082, 4918639, 34106916, 39025555, 73132471, 112158026, 185290497, 8264939894, 8450230391, 16715170285, 25165400676, 41880570961, 276448826442, 318329397403, 4733060390084, 19250570957739
OFFSET
0,3
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8377097920, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 8377097920*a(n-20) - a(n-40) for n>39. [Bruno Berselli, Jan 11 2014]
MATHEMATICA
Denominator[Convergents[Sqrt[511], 30]] (* Vincenzo Librandi, Jan 11 2014 *)
CROSSREFS
Cf. A041976.
Sequence in context: A241722 A276043 A041019 * A362640 A261130 A271387
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Jan 11 2014
STATUS
approved