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A055141 as a triangular array

1
01
-201
-8-601
-36-32-1201
-224-180-80-2001
-1880-1344-540-160-3001
-19872-13160-4704-1260-280-4201
-251888-158976-52640-12544-2520-448-5601
-3712256-2266992

A055141 as a square array

10-2-8-36-224-1880-19872-251888-3712256
10-6-32-180-1344-13160-158976-2266992
10-12-80-540-4704-52640
10-20-160-1260-12544
10-30-280-2520
10-42-448
10-56
10
1
10-2-8-36-224-1880-19872-251888-3712256
10-6-32-180-1344-13160-158976-2266992
10-12-80-540-4704-52640
10-20-160-1260-12544
10-30-280-2520
10-42-448
10-56
10
1