A031564 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 66.

4358, 4374, 4382, 4386, 4406, 4414, 4418, 4434, 4454, 4462, 4478, 4482, 4486, 4502, 4518, 4526, 4534, 4546, 4562, 4566, 4574, 4598, 4614, 4622, 9804, 9813, 9876, 9897, 9903, 9921, 9942, 9957, 9969, 9993, 10014, 10029, 10041, 10077, 10101, 10113, 10119

Offset

1,1

Links

Table of n, a(n) for n=1..41.

Crossrefs

Sequence in context: A176111 A164517 A125825 * A359490 A347603 A217345

Adjacent sequences: A031561 A031562 A031563 * A031565 A031566 A031567

Keyword

nonn

Author

David W. Wilson

Status

approved