import numpy as np
k,ln,n=1,0,0
ll=2

while ln <= ll:
    ak=2**np.sqrt(k)
    ln=int(np.log10(ak))+1
    n=int(ak/(10**(ln-1)))
    if ln <= ll:
        print("k=",k,"桁数は",ln,"ak=",ak)
    k += 1