Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

Finish the Pattern to the nearest number: 0 0 3 20 115 I need to add in a few more sentences to make this problem meet the standards. If you could solve this pattern, it would help me out alot, its sort of stumping me.

share|improve this question
1  
Were you thinking $n! - n$ as in oeis.org/A005096? –  Amzoti Mar 3 '13 at 3:53

2 Answers 2

According to a Chinese website I found on Google:

$$(0+0)\cdot2=0$$

$$(0+1)\cdot3=3$$

$$(3+2)\cdot4=20$$

$$(20+3)\cdot5=115$$

$$(115+4)\cdot 6=714$$

share|improve this answer

0, 0, 3, 20, 115, 714, 5033, 40312, 362871, 3628790, 39916789, 479001588, 6227020787, 87178291186, ...

http://oeis.org/A005096

The sequence is given by $n!-n$.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.