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A258316 as a triangular array

5
77
10910
15121215
2317151723
362520202536
57382825283857
9159413333415991
14693624641466293146
235148966754546796148235
379237151101756775101151237379
612

A258316 as a square array

57101523365791146235379612
79121725385993148237
1012152028416296151
15172025334667101
23252833415475
363841465467
5759626775
919396101
146148151
235237
379
57101523365791146235379612
79121725385993148237
1012152028416296151
15172025334667101
23252833415475
363841465467
5759626775
919396101
146148151
235237
379