# data[].attributes.body
An = 2(n-1)+2
An= 2n
A21=42
S42 = 42 ((2+42)/2)
S42 = 924 stairs total

# data[].attributes.body
It was difficult to see the number of steps at each step because the video was really sped up

# data[].attributes.body
I am not completely sure because it was hard to see his feet in the video so I could be wrong

# data[].attributes.body
an = 2n + 1
this is so wrong

# data[].attributes.body
So the dude never takes 2 steps at the top most stair. Theoretically, he would take double the amount of steps on the superstairs than he would on the regular stairs. But since he only takes one step on the top, we have to subtract that. We then have to add 2 because he takes 2 steps at the bottom of the stairs

2n+1, domain: [1,21]

# data[].attributes.body
a(n) = n (n + 1)

Edit: the fact that there is no common ratio or common difference makes finding the equation hard. {2, 6, 12, 20, 30, 42, 56...} Unless I didn't count correctly.

# data[].attributes.body
It’s wrong.

# data[].attributes.body
I was not able to stop the video to see the actual steps to stair ratio. The numbers kept climbing instead of showing still numbers. Otherwise I would've taken the steps taken on the 1st stair, with the steps taken on a random other stair, plugged them into an equation, used algebra to find D, etc.