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A128412 as a triangular array

1
-21
4-81
-836-121
16-12880-161
-32400-400140-201
64-11521680-896216-241
-1283136-62724704-1680308-281
256-819221504-2150410560-2816

A128412 as a square array

1-24-816-3264-128256
1-836-128400-11523136-8192
1-1280-4001680-627221504
1-16140-8964704-21504
1-20216-168010560
1-24308-2816
1-28
1
1-24-816-3264-128256
1-836-128400-11523136-8192
1-1280-4001680-627221504
1-16140-8964704-21504
1-20216-168010560
1-24308-2816
1-28
1