Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Method type should be "bool" not "Boolean"
"sum_of_n (or SequenceSum.sumOfN in Java, SequenceSum.SumOfN in C#) takes an integer n and returns a List (an Array in Java/C#) of length abs(n) + 1."
Pretty much the whole thing but the above really threw me! I think it's me just getting freaked out by all of the maths involved.
I struggled to understand the instructions.