18, 25, 23, 30, ?

2, 65, 7, 59, 12, 53, ?, ?

3, 4, 7, 11, 18, 29, ?

3, 18, 48, 93……….?............

255, 366, 479, 684, ?

313, 623, 933, 1234, ?

2, 9, 30, ?, 436, 2195, 13182

6, 42, ?,  1260, 5040, 15120, 30240