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A067028
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Numbers with a composite number of prime factors (counted with multiplicity).
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5
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16, 24, 36, 40, 54, 56, 60, 64, 81, 84, 88, 90, 96, 100, 104, 126, 132, 135, 136, 140, 144, 150, 152, 156, 160, 184, 189, 196, 198, 204, 210, 216, 220, 224, 225, 228, 232, 234, 240, 248, 250, 256, 260, 276, 294, 296, 297, 306, 308, 315, 324, 328, 330, 336
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(1)=16, 16 has 4 prime factors (counted with multiplicity) and 4 is composite.
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PROG
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(PARI) n=0; for (m=1, 10^10, if (!isprime(b=bigomega(m)) && b > 1, write("b067028.txt", n++, " ", m); if (n==1000, return))) \\ Harry J. Smith, Apr 26 2010
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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