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A163771 as a triangular array

1
12
346
7101420
1926365070
517096132182252
141192262358490672924
3935347269881346183625083432
1107150020342760374850946930943812870

A163771 as a square array

113719511413931107
241026701925341500
61436962627262034
20501323589882760
7018249013463748
25267218365094
92425086930
34329438
12870
113719511413931107
241026701925341500
61436962627262034
20501323589882760
7018249013463748
25267218365094
92425086930
34329438
12870