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A031538
Numbers k such 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 40.
0
1602, 1606, 1622, 1634, 1646, 1654, 1678, 1686, 1698, 1718, 1726, 1734, 1762, 3603, 3639, 3669, 3678, 3684, 3693, 3711, 3756, 3777, 3783, 3801, 3837, 3849, 3873, 3891, 3909, 3921, 3957, 3966, 6404, 6412, 6428, 6436, 6444, 6452, 6476, 6484, 6500, 6508
OFFSET
1,1
CROSSREFS
Sequence in context: A078958 A031758 A154505 * A202774 A293370 A352092
KEYWORD
nonn
STATUS
approved