What is the name of the following table1,2 of two digit numbers?

1 Can be found on pg. 10 of this link.
2 I've left some of the surrounding text for context.
What is the name of the following table1,2 of two digit numbers?

1 Can be found on pg. 10 of this link.
2 I've left some of the surrounding text for context.
It appears to be a magic square with the rows and columns adding up to 495.
Edit: technically it's not a magic square since the diagonals don't sum to 495.
It's called parker's eulerian 10X10 square., looks like it involves more combinatorics.