A042226 Numerators of continued fraction convergents to sqrt(639).

25, 76, 101, 177, 455, 1997, 8443, 10440, 50203, 60643, 292775, 1231743, 2756261, 3988004, 6744265, 24220799, 1217784215, 3677573444, 4895357659, 8572931103, 22041219865, 96737810563, 408992462117

Offset

0,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..200

Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48441598, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

Mathematica

Numerator[Convergents[Sqrt[639], 30]] (* Harvey P. Dale, Nov 30 2011 *)

Crossrefs

Cf. A042227.

Sequence in context: A123296 A118610 A008852 * A042224 A042228 A042230

Adjacent sequences: A042223 A042224 A042225 * A042227 A042228 A042229

Keyword

nonn,cofr,frac,easy

Author

N. J. A. Sloane.

Status

approved