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A077617
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Numbers n such that Omega(n)=Omega(n+1)+Omega(n+2).
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0
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12, 16, 24, 40, 45, 48, 56, 84, 100, 105, 132, 136, 140, 165, 168, 189, 204, 210, 224, 228, 261, 264, 272, 297, 315, 330, 345, 357, 372, 378, 380, 405, 441, 444, 450, 464, 465, 468, 477, 496, 513, 520, 522, 525, 536, 544, 546, 561, 564, 567, 588, 608, 621
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Omega(n) denotes the number of prime factors of n, counting multiplicity.
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EXAMPLE
| a(2)=16 is a term because Omega(16)=4=Omega(17)+Omega(18)=1+3=4
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PROG
| (PARI) j=[]; for(n=1, 1000, if(bigomega(n)==bigomega(n+1)+bigomega(n+2), j=concat(j, n))); j
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CROSSREFS
| Cf. A001222.
Sequence in context: A064695 A162824 A189763 * A192609 A157678 A109240
Adjacent sequences: A077614 A077615 A077616 * A077618 A077619 A077620
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KEYWORD
| nonn
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AUTHOR
| Shyam Sunder Gupta (guptass(AT)rediffmail.com), Dec 01 2002
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