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A357255 as a triangular array

2
3-2
4-52
5-97-2
6-1416-92
7-2030-2511-2
8-2750-5536-132
9-3577-10591-4915-2
10-44112-182196-14064-172
11-54156-294378-336204-8119-2

A357255 as a square array

234567891011
-2-5-9-14-20-27-35-44-54
2716305077112156
-2-9-25-55-105-182-294
2113691196378
-2-13-49-140-336
21564204
-2-17-81
219
-2
234567891011
-2-5-9-14-20-27-35-44-54
2716305077112156
-2-9-25-55-105-182-294
2113691196378
-2-13-49-140-336
21564204
-2-17-81
219
-2