珍珠湾ART

标题: My New Tree Planting Problem [打印本页]

作者: sean9991 时间: 2005-8-28 23:09
标题: My New Tree Planting Problem

20 trees, 21 rows, each row has 4 trees.

作者: 哈哈哈 时间: 2005-8-29 07:48
标题: Are you sure it's resolvable?

Are you sure it's resolvable?

作者: sean9991 时间: 2005-8-29 08:05
标题: 回复：Are you sure it's resolvable?

Do you have any doubt of my ability to count numbers no more than 22?

作者: 哈哈哈 时间: 2005-8-29 08:20
标题: 回复：回复：Are you sure it's resolvable?

Well, I just found that my 20 lines solution is the lastest achievement for this 20-tree problem.

If you can get 21 lines solution, you should write a paper and win a prize for it.

作者: sean9991 时间: 2005-8-29 10:14
标题: Don't trust them. They should study more math.

And I did get a graph with 21 rows this afternoon.

作者: sean9991 时间: 2005-8-30 18:05
标题: Nobody wanna crack this problem?

Nobody wanna crack this problem?

作者: husonghu 时间: 2005-8-30 18:23
标题: sean9991，你可多等几天，下次用新贴再给答案。[:)]

sean9991，你可多等几天，下次用新贴再给答案。

作者: yma16 时间: 2005-8-30 21:27
标题: 回复：Don't trust them. They should study more math.（图）

Hi Sean9991,

I clicked the links A003035 and A006065 and it says I don't have permission to get in.www.ddhw.com

3 4 5
Sloane A003035 A006065 A008997
www.ddhw.com
20

What does [57,60] mean?

Thanks.

作者: sean9991 时间: 2005-8-30 23:18
标题: That's the theoratical upper and lower bound

People found a solution of 57, and can prove theoratically that there can be no solution with 61 exists.

作者: sean9991 时间: 2005-8-30 23:24
标题: The permission stuff

is just because server busy. You should be able to get in if you try more. There is just number though, no picture given.

作者: 寒潭清 时间: 2005-8-31 17:18
标题: sean9991别着急,我刚刚看到题,容我想想.[:)]

sean9991别着急,我刚刚看到题,容我想想.

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