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S Oct 29, 2013 at 11:40 history suggested Abhimanyu Pallavi Sudhir CC BY-SA 3.0
OEIS link updated.
Oct 29, 2013 at 11:36 review Suggested edits
S Oct 29, 2013 at 11:40
Jun 2, 2010 at 17:43 vote accept khuss
Jun 2, 2010 at 5:26 comment added Gerry Myerson If you follow the links at the sequences site, I think you'll find there are formulas for $r\le4$ but only estimates for $r\ge5$. Anyway, if you're happy with my answer, I think the usual thing to do is to click the check mark next to it.
Jun 2, 2010 at 4:42 comment added user6491 Yes. You captured it beautifully. Thanks Gerry! I didn't think it as a geometrical problem, which is very interesting. Now, I need to figure out if there is any standard way to generate these combinations for a very large set of numbers - let us say 1000 numbers. I imagine if I can solve it for small set, it could be scaled for a large set. Also, I need to find if there is any mathematical equation to calculate the number of possible sets that have at most one intersecting element.
Jun 2, 2010 at 4:11 history edited Gerry Myerson CC BY-SA 2.5
Replaced incorrect answer, possibly with correct one
Jun 1, 2010 at 0:21 history answered Gerry Myerson CC BY-SA 2.5