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A042231 Denominators of continued fraction convergents to sqrt(641). 1
1, 3, 19, 22, 217, 673, 890, 3343, 4233, 24508, 28741, 53249, 294986, 348235, 1339691, 1687926, 6403469, 59319147, 65722616, 453654843, 1426687145, 71788012093, 216790723424, 1372532352637, 1589323076061 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Cf. A042230.

Sequence in context: A043073 A022128 A041381 * A191074 A019408 A070045

Adjacent sequences:  A042228 A042229 A042230 * A042232 A042233 A042234

KEYWORD

nonn,cofr,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.