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A291977 as a triangular array

1
1-1
1-10
11-42
17-1680
121-28-2648-16
15132-356408-1360
1113492-17741072912-1088272
12392592-5008-665620736-1587239680
149310628-50-94432154528-57856-4505639680-7936

A291977 as a square array

1111111111
-1-1172151113239493
0-4-16-2832492259210628
28-26-356-1774-5008-50
0484081072-6656-94432
-16-13691220736154528
0-1088-15872-57856
2723968-45056
039680
-7936
1111111111
-1-1172151113239493
0-4-16-2832492259210628
28-26-356-1774-5008-50
0484081072-6656-94432
-16-13691220736154528
0-1088-15872-57856
2723968-45056
039680
-7936