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A014613 Numbers that are products of 4 primes (or 4-almost primes, a generalization of semiprimes). +0
99
16, 24, 36, 40, 54, 56, 60, 81, 84, 88, 90, 100, 104, 126, 132, 135, 136, 140, 150, 152, 156, 184, 189, 196, 198, 204, 210, 220, 225, 228, 232, 234, 248, 250, 260, 276, 294, 296, 297, 306, 308, 315, 328, 330, 340, 342, 344, 348, 350, 351, 364, 372, 375, 376 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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