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A042879
Denominators of continued fraction convergents to sqrt(971).
2
1, 6, 25, 31, 56, 87, 230, 1237, 3941, 9119, 113369, 3523558, 42396065, 88315688, 307343129, 1625031333, 3557405795, 5182437128, 8739842923, 13922280051, 64428963127, 400496058813, 24895184609533, 149771603716011, 623981599473577, 773753203189588
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, 0, 0, 0, 0, 0, 0, 0, 24959613572660, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 24959613572660*a(n-22) - a(n-44) for n > 43. - Vincenzo Librandi, Jan 31 2014
MATHEMATICA
Denominator/@Convergents[Sqrt[971], 30] (* Harvey P. Dale, May 04 2011 *)
CROSSREFS
Sequence in context: A126016 A237286 A046416 * A042495 A018198 A079606
KEYWORD
nonn,frac,easy
EXTENSIONS
More terms from Vincenzo Librandi, Jan 31 2014
STATUS
approved