Definition:Poulet Number/Sequence

Sequence of Poulet Numbers
The sequence of Poulet numbers begins:
 * $341, 561, 645, 1105, 1387, 1729, 1905, 2047, 2465, 2701, 2821, 3277, 4033, 4369, 4371, 4681, 5461, \ldots$