If you just heard about Blogger Dynamic sitemaps that I strongly recommend that you first read the following post:
Note: Your Sitemap Index file is located at Your-Blog.blogspot.com/sitemap.xml
Now suppose you have around 717 published blog posts. In this case if you apply old school math then you need to create ( 717/150 = 4.78 ~ 5 Pages ). Always take one page extra if you get a divisional result in decimals. We would have considered only 4 pages if the result would have been exactly 4.00.
Sitemap index will automatically create these pages as long as your posts does not exceed a maximum of 3000. It creates only 20 pages to accommodate those 3000 posts (i.e. 20x150 = 3000). The remaining pages are not listed though created by the server and we will discuss here how to generate those extra pages manually and submit them separately to Google search console.
We need to submit the dynamic sitemap in two ways which are discussed below:
1. Submit Sitemap if your Posts are less than 3000
If your published posts are less than 3000 articles in all then you just need to submit the following sitemap to Google search console and Bing webmaster tools:
2. Submit Sitemap if your Posts are greater than 3000
If the count of your published posts is greater than 3,000 then you need to manually submit the subpages using the calculation we did earlier.
Follow this formula:
1 Suppose you have published up to 4,127 posts. Then you need to create subpages for only (4,127 - 3,000 = 1127) Posts. We will call them the leftover posts.
2 Divide the leftover posts by 150 to find how much sitemap pages you need to submit.
1127 / 150 = 7.513 ~ 8 Pages
3 Start the page count from 21 because 20 pages are already included inside the Parent sitemap.xml. So the sitemap pages that we need to submit along with the index sitemap are:
The above is a screenshot of the sitemaps I submitted for one of our clients who had more than 11,147 posts. I need to create a total of 55 Pages.
Good news!
If the above method seems quite a lot like elementary math to you then wait for just 6 hours and I will release a PHP tool that will automatically create sitemaps for you. I will release this tool today inshAllah.