A004489 as tables, graphs or sounds

A004489 formatted as a triangular array:

0

1 1

2 2 2

3 0 0 3

4 4 1 4 4

5 5 5 5 5 5

6 3 3 6 3 3 6

7 7 4 7 7 4 7 7

8 8 8 8 8 8 8 8 8

9 6 6 0 6 6 0 6 6 9

10 10 7 1 1 7 1 1 7 10 10

11 11 11 2 2 2 2 2 2 11 11 11

12 9 9 12 0 0 3 0 0 12 9 9 12

0 1 2 3 4 5 6 7 8 9 10 11 12

1 2 0 4 5 3 7 8 6 10 11 9

2 0 1 5 3 4 8 6 7 11 9

3 4 5 6 7 8 0 1 2 12

4 5 3 7 8 6 1 2 0

5 3 4 8 6 7 2 0

6 7 8 0 1 2 3

7 8 6 1 2 0

8 6 7 2 0

9 10 11 12

10 11 9

11 9

12