Talk:Sequence of non-squares: Difference between revisions
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::::What I wanted to say: if your sequence is u(n) = n^2 + 1, then there are no squares in the sequence (for n > 0), and by the task's proposed test, it would be accepted (I mean the second test, but it would be easy to build a list that is correct for its first 22 terms, then wrong). But not all non-squares are in the sequence. This is not a rhetorical question. [[User:Toucan|Toucan]] 03:42, 16 June 2011 (UTC) |
::::What I wanted to say: if your sequence is u(n) = n^2 + 1, then there are no squares in the sequence (for n > 0), and by the task's proposed test, it would be accepted (I mean the second test, but it would be easy to build a list that is correct for its first 22 terms, then wrong). But not all non-squares are in the sequence. This is not a rhetorical question. [[User:Toucan|Toucan]] 03:42, 16 June 2011 (UTC) |
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:::::Ah, <i>that</i>'s what you meant, that the sequence should contain ALL non-squares. I'm not sure if the task did ask that, maybe the author should clarify. --[[User:Ledrug|Ledrug]] 05:01, 16 June 2011 (UTC) |
:::::Ah, <i>that</i>'s what you meant, that the sequence should contain ALL non-squares. I'm not sure if the task did ask that, maybe the author should clarify. --[[User:Ledrug|Ledrug]] 05:01, 16 June 2011 (UTC) |
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::::::The task asks for the ''sequence of non-square natural numbers''. If in doubt, it even gives a link to OEIS sequence A000037. [[User:Toucan|Toucan]] 06:14, 16 June 2011 (UTC) |
::::::The task asks for the ''sequence of non-square natural numbers''. If in doubt, it even gives a link to OEIS sequence A000037. It's not really bad to check that there are no squares in this sequence, but it would be better to check that all non-squares are here. Since it's not difficult to do, there is no reason no to do it I think. [[User:Toucan|Toucan]] 06:14, 16 June 2011 (UTC) |
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