A031562 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 64.

4098, 4126, 4146, 4162, 4166, 4174, 4178, 4182, 4194, 4198, 4222, 4246, 4258, 4262, 4286, 4294, 4322, 4354, 9219, 9237, 9249, 9294, 9321, 9327, 9357, 9399, 9417, 9438, 9444, 9489, 9501, 9507, 9543, 9561, 9573, 9579, 9582, 9609, 9633, 9687, 9723, 9726

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Crossrefs

Sequence in context: A036090 A123094 A226695 * A345507 A346357 A282548

Adjacent sequences: A031559 A031560 A031561 * A031563 A031564 A031565

Keyword

nonn

Author

David W. Wilson

Status

approved