In an arithmetic sequence, if Sn=n2S_n = n^2Sn=n2, what is the sequence?
1,3,5,7,…1, 3, 5, 7, \dots1,3,5,7,…
2,4,6,8,…2, 4, 6, 8, \dots2,4,6,8,…
1,2,3,4,…1, 2, 3, 4, \dots1,2,3,4,…
0,2,4,6,…0, 2, 4, 6, \dots0,2,4,6,…