Triple Axels and quads are both undervalued. It should go like this:

1A = 1.1
2A = 3.3
3A = 9.9

1T = 0.4
2T = 1.3
3T = 3.9
4T = 11.7

1Lz = 0.7
2Lz = 2.0
3Lz = 6.0
4Lz = 18.0 (Brandon Mroz rules!)

3Lz+3T = 9.9 (assuming no bonus in tech for jumps done in combination)