A031578 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 80.

6402, 6406, 6434, 6478, 6494, 6498, 6502, 6514, 6518, 6542, 6546, 6582, 6598, 6614, 6638, 6646, 6658, 6662, 6686, 6694, 6718, 6722, 14403, 14439, 14457, 14493, 14511, 14541, 14583, 14613, 14622, 14709, 14727, 14757, 14763, 14766, 14772, 14781, 14793

Offset

1,1

Links

Table of n, a(n) for n=1..39.

Crossrefs

Sequence in context: A237954 A269827 A270056 * A252612 A259060 A259078

Adjacent sequences: A031575 A031576 A031577 * A031579 A031580 A031581

Keyword

nonn

Author

David W. Wilson

Status

approved