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A074912 as a triangular array

1
11
222
2442
46864
2101414102
612242824126
41836525236184
62254881048854226
4287614219219214276284
10321042183343843342181043210

A074912 as a square array

112242646410
1246101218222832
2481424365476104
2614285288142218
4102452104192334
2123688192384
61854142334
42276218
628104
432
10
112242646410
1246101218222832
2481424365476104
2614285288142218
4102452104192334
2123688192384
61854142334
42276218
628104
432
10