Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 4, 8, 12, 16. 3. The odd term deviating from the pattern is 21.

Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 7, 14, 21, 28. 3. The odd term deviating from the pattern is 33.

Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 9, 18, 27, 36. 3. The odd term deviating from the pattern is 41.

Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 17, 34, 51, 68. 3. The odd term deviating from the pattern is 73.

Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 49, 98, 147, 196. 3. The odd term deviating from the pattern is 201.

Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 3, 6, 9, 12. 3. The odd term deviating from the pattern is 17.

Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 99, 198, 297, 396. 3. The odd term deviating from the pattern is 401.

Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 64, 128, 192, 256. 3. The odd term deviating from the pattern is 261.

Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 100, 200, 300, 400. 3. The odd term deviating from the pattern is 405.

Step-by-step solution: 1. The pattern multiplies the base number by the position index. 2. Expected numbers: 101, 202, 303, 404. 3. The odd term deviating from the pattern is 409.