1. ## Re: Sequence

Shouldn't the second number in the sequence be 5 instead of 3?

2. ## Re: Sequence

Yes, I typed it incorrectly and have changed it to a 5. Thanks.

3. ## Sequence

<P ID="edit" class=small>(Edited by Tricky on 16-Oct-06 09:52. Changed the second number to a 5 (was 3). Thanks Hans.)</P>What are the next three numbers? What is the 50th number in this sequence? Explain.

1, 5, 15, 34, 65, 111, 175, ...

4. ## Re: Sequence

OK, the next items are <span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">260, 369 and 505</span hide>
And the 50th item is <span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">62525</span hide>

Explanation:
<table border=1><td><span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">Number</span hide></td><td><span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">1st order diff.</span hide></td><td><span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">2nd order diff.</span hide></td><td><span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">3rd order diff.</span hide></td><tr><td align=right><span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">1</span hide></td><td align=right><span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">

5. ## Re: Sequence

Very cool! <img src=/S/thumbup.gif border=0 alt=thumbup width=15 height=15>

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