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A031517
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 19.
0
363, 367, 379, 383, 387, 391, 411, 419, 431, 439, 1448, 1480, 1536, 1568, 1576, 1632, 1664, 1696, 1728, 1760, 3255, 3327, 3387, 3543, 3687, 3747, 3759, 3819, 3831, 3903, 3963, 5784, 5912, 5976, 6152, 6168, 6232, 6296, 6424, 6488, 6616, 6744, 6872, 6936
OFFSET
1,1
CROSSREFS
Sequence in context: A212324 A007565 A098253 * A192449 A116285 A031697
KEYWORD
nonn
STATUS
approved