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A055135 as a triangular array

1
01
-1-21
-20-61
-3018-121
-40-4080-201
-5075-400225-301
-60-1261680-1890504-421
-70196-627213230-6272980-561
-80-28821504-8164864512-168001728-721
-90405

A055135 as a square array

10-1-2-3-4-5-6-7-8-9
1-200000000
1-618-4075-126196-288405
1-1280-4001680-627221504
1-20225-189013230-81648
1-30504-627264512
1-42980-16800
1-561728
1-72
1
10-1-2-3-4-5-6-7-8-9
1-200000000
1-618-4075-126196-288405
1-1280-4001680-627221504
1-20225-189013230-81648
1-30504-627264512
1-42980-16800
1-561728
1-72
1