Question

5,?,38,105,299,872,258

Answer 1

pattern = x 3 - 1²,  x 3 - 2²,  x 3 - 3²,   x 3 - 4² x 3 - 5²

5 x 3 - 1² = 15 -1 =14

Answer is 14

check second one for sure

14 x 3 - 2² = 42 - 4 =38