limit = 500000

triangle = set([ int(n*(n+1)/2) for n in range(1, limit) ])
pentagonal = set([ int(n*(2*n-1)) for n in range(1, limit) ])
hexagonal = set([ int(n*(3*n-1)/2) for n in range(1, limit) ])

result = triangle & pentagonal & hexagonal

for i in result:
	print i