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A031670
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 82.
0
42461, 136981, 137722, 206237, 208057, 379681, 383386, 387109, 487493, 493093, 497314, 621305, 750397, 897338, 899233, 903029, 1053301, 1055354, 1057409, 1059466, 1065649, 1069781, 1073921, 1075994, 1228393, 1237273, 1250653
OFFSET
1,1
CROSSREFS
Subsequence of A003814.
Sequence in context: A345154 A103155 A271749 * A237312 A217164 A062694
KEYWORD
nonn
EXTENSIONS
First term 6725 removed by Georg Fischer, Jun 16 2019
STATUS
approved