365.
Subtract 38 from 79: 79-38 = 41
365 would be next because you multiply the last number by three then subtract one.
A single number, such as 18233039, cannot define a series.
The next number in the series will be 66. The next number is found by adding the two previous numbers. (2+7=9, 9+7=16, etc...)
41
41
402. The sequence alternates between multiply by 3, and add 11.
16.9268
Currently, the #41 car is not being driven in the Sprint Cup Series.
365 since the pattern is times three minus one
24 + 41 + 38 = 103