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A204257 as a triangular array

1
32
213
1321
32132
213213
1321321
32132132
213213213
1321321321
32132132132
213213213213
1321321321321
32132132

A204257 as a square array

13213213213213
2132132132132
321321321321
13213213213
2132132132
321321321
13213213
2132132
32132
1321
213
32
1
13213213213213
2132132132132
321321321321
13213213213
2132132132
321321321
13213213
2132132
32132
1321
213
32
1