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A063743 Numbers n such that n and Omega(n) are relatively prime, where Omega(n) is the number of prime divisors of n (with repetition). +0
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1, 2, 3, 5, 7, 8, 9, 11, 13, 15, 17, 19, 20, 21, 23, 25, 28, 29, 31, 32, 33, 35, 37, 39, 41, 43, 44, 47, 48, 49, 50, 51, 52, 53, 55, 57, 59, 61, 65, 67, 68, 69, 70, 71, 72, 73, 76, 77, 79, 81, 83, 85, 87, 89, 91, 92, 93, 95, 97, 98, 101, 103, 107, 108, 109, 110, 111, 112 (list; graph; listen)
OFFSET

1,2

PROGRAM

(PARI) j=[]; for(n=1, 300, if(gcd(n, bigomega(n))==1, j=concat(j, n))); j

CROSSREFS

Cf. A001222.

Sequence in context: A062062 A078643 A137698 this_sequence A086539 A049468 A001857

Adjacent sequences: A063740 A063741 A063742 this_sequence A063744 A063745 A063746

KEYWORD

nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Aug 13 2001

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Last modified August 28 19:25 EDT 2008. Contains 143183 sequences.


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