A031549 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 51.

2603, 2619, 2643, 2647, 2651, 2659, 2663, 2671, 2683, 2687, 2699, 2707, 2711, 2719, 2731, 2739, 2747, 2759, 2763, 2767, 2771, 2787, 2791, 2803, 2807, 10408, 10432, 10464, 10504, 10528, 10560, 10568, 10592, 10624, 10720, 10752, 10760, 10784, 10848

Offset

1,1

Links

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

Crossrefs

Sequence in context: A326260 A262799 A183965 * A031729 A001726 A109487

Adjacent sequences: A031546 A031547 A031548 * A031550 A031551 A031552

Keyword

nonn

Author

David W. Wilson

Status

approved