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A013644 Numbers n such that continued fraction for sqrt(n) has period 4. +0
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7, 14, 23, 28, 32, 33, 34, 47, 55, 60, 62, 75, 78, 79, 95, 96, 98, 119, 126, 128, 136, 138, 140, 141, 142, 155, 167, 174, 176, 180, 189, 192, 194, 215, 219, 220, 222, 223, 248, 252, 254, 266, 287, 299, 300, 305, 312, 315, 318, 320, 321, 322, 335, 359, 368, 377, 390, 392 (list; graph; listen)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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