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A004174 as a triangular array

1
-12
0-44
20-128
0160-3216
-160800-8032
0-19203200-19264
2720-1344011200-448128
043520-7168035840-1024256
-79360391680-322560107520-2304512
0-1587200

A004174 as a square array

1-1020-1602720-79360
2-40160-192043520-158720
4-120800-13440391680
8-3203200-71680
16-80011200-32256
32-192035840
64-448010752
128-10240
256-2304
512
1-1020-1602720-79360
2-40160-192043520-158720
4-120800-13440391680
8-3203200-71680
16-80011200-32256
32-192035840
64-448010752
128-10240
256-2304
512