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A042643
Denominators of continued fraction convergents to sqrt(851).
2
1, 5, 6, 29, 64, 477, 541, 4264, 9069, 40540, 49609, 288585, 16787539, 84226280, 101013819, 488281556, 1077576931, 8031320073, 9108897004, 71793599101, 152696095206, 682577979925, 835274075131, 4858948355580, 282654278698771, 1418130341849435
OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16837148, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 16837148*a(n-12) - a(n-24) for n>23. - Vincenzo Librandi, Jan 26 2014
MATHEMATICA
Denominator[Convergents[Sqrt[851], 30]] (* Vincenzo Librandi, Jan 26 2014 *)
PROG
(Magma) I:=[1, 5, 6, 29, 64, 477, 541, 4264, 9069, 40540, 49609, 288585, 16787539, 84226280, 101013819, 488281556, 1077576931, 8031320073, 9108897004, 71793599101, 152696095206, 682577979925, 835274075131, 4858948355580]; [n le 24 select I[n] else 16837148*Self(n-12)-Self(n-24): n in [1..40]]; // Vincenzo Librandi, Jan 26 2014
CROSSREFS
Sequence in context: A041011 A152118 A041056 * A047179 A166023 A137762
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Jan 26 2014
STATUS
approved