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A041800 Numerators of continued fraction convergents to sqrt(421). 1
20, 21, 41, 554, 2811, 3365, 12906, 16271, 45448, 61719, 107167, 168886, 444939, 4173337, 4618276, 36501269, 114122083, 378867518, 871857119, 2122581756, 7239602387, 23841388917, 174129324806 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

CROSSREFS

Cf. A041801.

Sequence in context: A041806 A041804 A041802 * A053242 A041818 A041816

Adjacent sequences:  A041797 A041798 A041799 * A041801 A041802 A041803

KEYWORD

nonn,cofr,easy,less

AUTHOR

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

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.