Which of these is NOT an arithmetic sequence?
2,4,6,82, 4, 6, 82,4,6,8
1,1,1,11, 1, 1, 11,1,1,1
1,2,4,81, 2, 4, 81,2,4,8
10,7,4,110, 7, 4, 110,7,4,1