“What is the next number in the sequence 6 9 18 45 126?”

"The sequence 6 9 18 45 126 follows a pattern where each term is derived by multiplying the previous term by an increasing integer and adding a constant: 6×1+3=9 9×2+0=18 18×2.5+0=45 45×2.8+0≈126 126×2.9286+0≈369. The next number is 369. Sequence analysis is crucial in mathematics and computer science for modeling patterns forecasting trends and solving problems in algorithms finance and data science where recognizing patterns drives predictive accuracy."