>>> from successions import recaman

---- inici

>>> r = recaman(0)
>>> r
[0]
>>> r = recaman(1)
>>> r
[0, 1]
>>> r = recaman(2)
>>> r
[0, 1, 3]

---- fi

>>> r = recaman(3)
>>> r
[0, 1, 3, 6]
>>> r = recaman(4)
>>> r
[0, 1, 3, 6, 2]
>>> r = recaman(5)
>>> r
[0, 1, 3, 6, 2, 7]
>>> r = recaman(6)
>>> r
[0, 1, 3, 6, 2, 7, 13]
>>> r = recaman(7)
>>> r
[0, 1, 3, 6, 2, 7, 13, 20]
>>> r = recaman(8)
>>> r
[0, 1, 3, 6, 2, 7, 13, 20, 12]
>>> r = recaman(9)
>>> r
[0, 1, 3, 6, 2, 7, 13, 20, 12, 21]
>>> r = recaman(10)
>>> r
[0, 1, 3, 6, 2, 7, 13, 20, 12, 21, 11]