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A138765 as a triangular array

2
53
102410
179914524
26288109084065
376755185118804901168
501368182269302412960128560441
65249951985491400166926514137201664651155
8242241274501964024132496012995372815421330

A138765 as a square array

2510172637506582
32499288675136824994224
10145109051851822651985127450
2484011880930244914001964024
654901129601166926513249601
16828560141372029953728
44116646515421330
1155
2510172637506582
32499288675136824994224
10145109051851822651985127450
2484011880930244914001964024
654901129601166926513249601
16828560141372029953728
44116646515421330
1155