Code Golf: Diamonds
To start the year let's have a round of CodeGolf!
You know the drill. Shortest solution wins.
Print a size ascending range of Diamonds using the numbers 1 to 9, ranging from size 1 to size N, each diamond separated by a blank line.
A size 1 diamond should look like this, a single centered 1:
1
With the size N=9 diamond looking like this:
1 121 12321 1234321 123454321 12345654321 1234567654321 123456787654321 12345678987654321 123456787654321 1234567654321 12345654321 123454321 1234321 12321 121 1
Bonus Level: For N>9 you can either reuse 1-9 or supply arbitrary characters.