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# Creating a set / sequence of positive integers

Posted 9 years ago
 I've tried to get this kind of formula working on wolfram alpha: a) { n ? ? > 1 : gcd(n,30) = 1 } b) { n ? n ? ?, n?1, 2?n, 3?n, 5?n } Both should produce similar sequence of numbers (SON): 7,11,13,17,19,23,29,31,37,41,43,47,49,53,59,61,67,71,73,77,79,83,89,91,97,101, That I want to again use on other formula. So is it possible to create a set: a) such which has positive integers greater than 1 and which will produce 1 as a greatest common divider or set: b) such which has no numbers 1 or numbers with a product of 2, or numbers with a product of 3, or numbers with a product of 5? Basicly I'm already stuck with the notation of n in Elements: n ? ? , how to do it plus I can't get result outputting the SON mentioned above.
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Posted 9 years ago
 Thanks. Got me on right tracks:solve gcd(n, 30) = 1 1<=n<=100 for nAndn such that gcd(n, 30)=1, n=1 to 100
Posted 9 years ago
Posted 9 years ago