please help about numbers to hatch

[aminblack1364]

hi.i want help about numbers 26 17 20 11 14 5 ???and 3 7 15 31 ????????????

[sbchan]

26(-9) 17(+3) 20(-9) 11(+3) 14(-9) 5(+3) 8

3(+4) 7(+8) 15(+16) 31(+32) 63