#(Python)
keep = []
for a in range(10001):
....for b in range(1,10001):
........s = bin(a)
........t = bin(b)
........num = int(t[2:],2)
........if t[2:] not in s[2:]:
............keep.append(b)
............break

with open("A261461b.txt","w") as f:
....for x,y in enumerate(keep):
........f.write(str(x)+" "+str(y)+"\n")

#David A. Consiglio, Jr., Sep 19 2015