Find the first 5 terms of the sequence: an = n2 - 2n. Enter your answers separated by commas; example: 1, -5, 10, -15, 20

Question

anonymous · Answer

I get 1, -1, 1, -1, 1... I feel like that is wrong though

anonymous · Answer

JK I got -1, 3, 3, 3, 3... Still seems wrong

anonymous · Answer

@Here_to_Help15

anonymous · Answer

JK both of those are wrong...

anonymous · Answer

I got it, it is -1, 0, 3, 8, 15

anonymous · Answer

ok, let check
n=1, then $a_1 = 1^2 -2*1 = -1$
n =2, then $a_2 = 2^2 -2*2 = 0$
 n =3 , then $a_3 = 3^2 -2*3 = 3$

anonymous · Answer

ok, I can stop now, hihihi

anonymous · Answer

haha thank you though haha

here_to_help15 · Answer

1) It will depend on whether you start with a(0) or a(1). 
If you start with a(0), we will have: 0, -1, 0, 3, 8 
If you start with a(1), we will have: -1, 0, 3, 8, 15