Answer:
The first sequence started by adding 2, then added double that each time.
example: 1+2=3, 3+4=7, 7+8=15, 15+16=31, 31+32=63, 63+64=27, etc.
The second sequence started by adding 2, then added 2² each time.
example: 2+2=4, 4+4=8, 8+8=16, 16+16=32, 32+32=64, 64+128=192, etc.
Not sure what disks are