Hi I am getting error in if else statement but dont know where is the mistake.

`Points=[];for i=1:257 if i == 16 & i == 136 a=mod(i*(modInv(32*i+1,n)),n); else a=mod(i*(modInv(16*i+1,n)),n); end b(i)=mod(a,n); end Points=[b];`

For i= 16 or 136 it should execute line3 but it gives NaN at i=16 and i=136

If anyone can help me what is the mistake

Correct answer for i=16 is 241 and for i=136 is 120

## Best Answer