@WongTon993,
This is the kinda pattern/theory I found...take it for what its worth. I could be way off base here. But there are 10 total numbers in the sequence including the 2 numbers we dont know.
3 5 15 16 38 || 26 29 41 __ __
V V V V V V
2 10 1 22 3 12
the difference between the 2 and the 3 is 1, the difference between the 10 and the 12 is 2...so the difference between 41 and the next number should be 4, because the difference between 4 and 1 is 3. The next number I have is 71 because 22+4 = 26 and 45 + 26 = 71. Does that make sense?