A031571 Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 73.

5331, 5339, 5347, 5351, 5371, 5383, 5387, 5399, 5407, 5419, 5427, 5431, 5443, 5471, 5479, 5483, 5503, 5507, 5519, 5527, 5531, 5543, 5563, 5571, 5591, 5623, 21320, 21376, 21408, 21416, 21472, 21504, 21536, 21544, 21632, 21640, 21664, 21696, 21704, 21760

Offset

1,1

Links

Table of n, a(n) for n=1..40.

Crossrefs

Sequence in context: A236274 A278895 A317918 * A031751 A023342 A050814

Adjacent sequences: A031568 A031569 A031570 * A031572 A031573 A031574

Keyword

nonn

Author

David W. Wilson

Status

approved