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A031644
Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 56.
0
38858, 64090, 65617, 96221, 135593, 180001, 227818, 228773, 232613, 233578, 285517, 287657, 348541, 355657, 416554, 425633, 429554, 492026, 493429, 499061, 501889, 503306, 507569, 578329, 663437, 666697, 669965, 673241, 676525, 679817
OFFSET
1,1
CROSSREFS
Sequence in context: A204759 A206597 A088237 * A224622 A233955 A250515
KEYWORD
nonn
EXTENSIONS
First term 3137 removed by Georg Fischer, Jun 16 2019
STATUS
approved