For automatic sequencing of the data. There are two methods you can go with. Please have a look:
1. In the database, you can make the first column auto increment, so with every entry it will automatically take the sequencing and will also make the data look good.
2. If you need it in the application, then you have to make a function to check the number of rows that you have entered and according to it you have to display the number.
I am a programmer, so if you need code then let me know. You may also check this article
for some good stuff.