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Rascal's Triangle Formula
By Qualified, history, 4 years ago, In English

Recently, I stumbled upon Rascal's Triangle. You can read more about it here. Basically it is very like Pascal's Triangle but a bit different. I know that there is a $$$O(n)$$$ solution for Pascal's Triangle. I would want to calculate the $$$nth$$$ row in $$$O(n)$$$ mod $$$998244353$$$. Help?

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4 years ago, # |
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4 years ago, # |
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Isn't it just $$$k(n - k) + 1$$$ for the $$$n$$$-th row and $$$k$$$-th column?

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    4 years ago, # ^ |
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    Is the first row the 0-th row or the 1st row and is the first column the 0-th column or the 1st column?

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