Answer:
numeric maybe?
3/5
Step-by-step explanation:
Hope that this helped :)
so just successive powers of 2
1, 3, 7, 15, 31, 63, _? Add successive powers of 2 to the number: 1+2=3; 3+4=7; 7+8=15; 15+16=31; 31+32=63; 63+64=127.