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A084408 as a triangular array

1
23
5711
4689
1317192329
101214151618
31374143475359
2021222425262728
303233343536383940
42444546484950515254
6167717379838997101103107
5556575860

A084408 as a square array

12541310312030426155
3761712372132446756
1181914412233457157
92315432434467358
2916472535487960
185326364983
5927385089
28395197
4052101
54103
107
12541310312030426155
3761712372132446756
1181914412233457157
92315432434467358
2916472535487960
185326364983
5927385089
28395197
4052101
54103
107