>>> from curiosos import es_suma_consecutius

---- inici

>>> r = es_suma_consecutius(9, 4)
>>> r
True
>>> r = es_suma_consecutius(9, 3)
>>> r
False
>>> r = es_suma_consecutius(6, 1)
>>> r
True

---- fi

Un nombre senar n sempre és la suma n//2 + (n//2 + 1)

>>> inici, quants = 3, 100
>>> ns = range(inici, inici + quants*2, 2)
>>> ns2 = range(inici//2, inici + quants)
>>> all(map(es_suma_consecutius, ns, ns2))
True


Generem nombres curiosos

>>> a, p = 200, 10
>>> n = sum(range(a, a + p + 1))
>>> r = es_suma_consecutius(n, a)
>>> r
True

>>> a, p = 275, 10
>>> n = sum(range(a, a + p + 1))
>>> r = es_suma_consecutius(n, a)
>>> r
True

>>> a, p = 832, 11
>>> n = sum(range(a, a + p + 1))
>>> r = es_suma_consecutius(n, a)
>>> r
True

>>> a, p = 173, 5
>>> n = sum(range(a, a + p + 1))
>>> r = es_suma_consecutius(n, a)
>>> r
True


Nombres que no són curiosos

>>> a, p = 200, 10
>>> n = sum(range(a, a + p + 1)) + 2
>>> r = es_suma_consecutius(n, a)
>>> r
False

>>> a, p = 275, 10
>>> n = sum(range(a, a + p + 1)) + 4
>>> r = es_suma_consecutius(n, a)
>>> r
False

>>> a, p = 832, 11
>>> n = sum(range(a, a + p + 1)) + 6
>>> r = es_suma_consecutius(n, a)
>>> r
False

>>> a, p = 173, 5
>>> n = sum(range(a, a + p + 1)) + 2
>>> r = es_suma_consecutius(n, a)
>>> r
False