A031536 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 38.

1446, 1454, 1458, 1474, 1478, 1486, 1494, 1502, 1506, 1538, 1542, 1558, 1574, 1598, 3252, 3261, 3273, 3279, 3297, 3309, 3351, 3369, 3396, 3423, 3441, 3453, 3489, 3513, 3549, 3561, 3597, 5780, 5788, 5804, 5812, 5820, 5836, 5860, 5868, 5884, 5916, 5924

Offset

1,1

Links

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

Crossrefs

Sequence in context: A180465 A328886 A031754 * A181973 A226097 A023311

Adjacent sequences: A031533 A031534 A031535 * A031537 A031538 A031539

Keyword

nonn

Author

David W. Wilson

Status

approved