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Discussion of Problem 1625. Hankel Matrix

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Is it correct hankel matrix? DEF 29 Aug 2008 20:40
| 0 1 1 |
| 1 1 1 | = 1
| 1 1 0 |

Is it correct hankel matrix and answer for n = 3?
Re: Is it correct hankel matrix? [SPbSU ITMO] WiNGeR 29 Aug 2008 22:14
It is a Hankel matrix, but is not answer, because
|0| == 0 != 1 and
| 0 1 |
| 1 1 | == -1 != 1
Thank you for answer!
I did not notice some conditions...