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A041783
Denominators of continued fraction convergents to sqrt(412).
2
1, 3, 7, 10, 37, 47, 225, 722, 1669, 22419, 225859, 2958586, 6143031, 21387679, 91693747, 113081426, 430938025, 544019451, 1518976927, 5100950232, 205556986207, 621771908853, 1449100803913, 2070872712766, 7661718942211, 9732591654977
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, 207075963134, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 207075963134*a(n-20) - a(n-40) for n>39. - Vincenzo Librandi, Dec 24 2013
MATHEMATICA
Denominator[Convergents[Sqrt[412], 30]] (* Vincenzo Librandi, Dec 24 2013 *)
CROSSREFS
Cf. A041782.
Sequence in context: A056807 A146927 A193650 * A041899 A101397 A042229
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Dec 24 2013
STATUS
approved