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A131409
Middle of three subsequent semiprimes with common prime factor = 3.
+0
1
3909, 87627, 132609, 163491, 167451, 170679, 209289, 224151, 270591, 309273, 318651, 327423, 340077, 340077, 395121, 444459, 481863, 497121, 522231, 536451, 584589
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.
AT&T Labs Research
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