79, 39, 19, 9, 4, 1.5

there should be a coma between 9 & 4 next number = (previous-1)/2

What is the next number in the sequence - 1, 7, 10, 13, 19, 23, 28, 31, 32, 44, 49, 68, 70, 79, 82, 86, 91, 94, 97, 100, 103, 109, 129, 130, ?