1*1*1*1+(1+1+1+1)=5 2*2*2*2+(2+2+2+2)=24 3*3*3*3+(3+3+3+3)=93 4*4*4*4+(4+4+4+4)=272 5*5*5*5+(5+5+5+5)=645
If 5 + 4 => 9 3 + 5 => 9 9 + 1 => 9 1 + 6 => 8 4 + 2 => 8 1 + 7 => 7 5 + 6 => 6 3 + 7 => 3 7 + 0 => 0 Then 8 – 1 => ??