SOLUTION: This is a question on patterns and how to describe them. a) The pattern is 1,2,6, 24. I have already figured out the next number in the pattern. Please help me determine how to

Question 489720: This is a question on patterns and how to describe them.
a) The pattern is 1,2,6, 24. I have already figured out the next number in the pattern. Please help me determine how to describe this pattern.
b) The pattern is 0, 3, 8, 15, 24. Again, please help me descibe this pattern.
Thanks :)
Answer by chessace(471) (Show Source): You can put this solution on YOUR website!
a) This one is so common that it has its own symbol "!", the nth number is "n!" or "n factorial" which is the product of the 1st n whole numbers.
b) Take differences: 3, 5, 7, 9. The odd numbers, which sum to squares, so just tweak the error:
nth term = n^2 -1.

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