Urgent, there is a sequence, 4.10.16.22... 52. How many items are there in this sequence

Urgent, there is a sequence, 4.10.16.22... 52. How many items are there in this sequence

10-4=6
16-10=6
22-16=6
…………
A sequence is an arithmetic sequence with a tolerance of 6
(52-4)/6 +1=14
There are 14 items in this series