Finish the sequence 1,1,1,3,5,9,17,31,57, , ,

Your basically adding the first 3 numbers to get the next for example: 1,1,1=3
and then 1,1,3,=5 and then 1,3,5=9 then 3,5,9 =17 so on and so forth.

so to get the first answer of 105 I added the last 3 numbers in the sequence together (17,31,57) to get 105

the next 3 numbers in the sequence are:
105,193,355

That is so true, i can’t believe how true this is