How to make sequential Sheet Number at workbook

Hii i want to make a link of column at other sheet in same workbook, and i want it sequential, here is the sample
SHEET DETAIL
Column A

='MASTER (3)'!$H$20
='MASTER (4)'!$H$20
='MASTER (5)'!$H$20
='MASTER (6)'!$H$20
='MASTER (7)'!$H$20

How to make it possible with just drug the table? every time i need to input no 3,4,5,6,7 manually and it's waste my time

Thanks for helping.

Hi, A2=

Formula:

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row()+1 will return 3

Hi Sindus, i always got #REF result. Any idea?
Thanks

Can you attach sample workbook?

Thanks Sindhus it's success