for n in range(1,100): a=n n3='' while a>0: n3=str(a%3)+n3 a//=3 s=sum(int(i) for i in str(n3)) if s%2==0: n3='2'+n3[2:]+'0' else: n3='20'+n3[2:]+'1' r=int(n3,3) if r>75: print(n,r)