Auto Fill Serial Numbers, Using Function in Google Sheets
SEQUENCE(COUNTA(B2:B,1)), the dynamic setup which adjusts numbering automatically when rows are added or removed, it's a time-saving, error-free solution.
Sequence
SEQUENCE Function, Create Custom Number Charts or Tables in Google Sheets
The SEQUENCE function, can accept starting values and step sizes to further customize the sequence, making it ideal for dynamic numbering systems like automatic serial numbers or ordered data entries.