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Search: id:A031523
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A031523 Numbers n such that continued fraction for sqrt(n) has even period and central term 25. +0
1
627, 631, 643, 647, 659, 679, 683, 691, 699, 719, 727, 2504, 2536, 2560, 2656, 2688, 2720, 2752, 2784, 2792, 2816, 2912, 5631, 5703, 5835, 5847, 5919, 5991, 6051, 6207, 6339, 6351, 6423, 6495, 6555, 10008, 10072, 10264, 10328, 10376, 10456, 10648 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A031613 A031728 A098262 this_sequence A129974 A031703 A098260

Adjacent sequences: A031520 A031521 A031522 this_sequence A031524 A031525 A031526

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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