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A239304 as a triangular array

1
12
312
4213
25413
256314
6237514
73268415
387249615
38942710516
9341082511716
10439

A239304 as a square array

1134226733910
21255238834
2146327943
3137624109
3158428
414972
416105
51511
517
61
6
1134226733910
21255238834
2146327943
3137624109
3158428
414972
416105
51511
517
61
6