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A055288 as a triangular array

1
-11
1-21
02-31
-324-41
5-1146-51
94-2699-61
-44723-521512-71
-50-82213-20-942416-81
545-857-53546-82-1463520-91
5721636-33702561288-216-2325025-10

A055288 as a square array

1-110-359-44-50545572
1-222-11472-82-8571636
1-344-263213-53-3370
1-469-52-20546256
1-5915-94-821288
1-61224-146-216
1-71635-232
1-82050
1-925
1-10
1-110-359-44-50545572
1-222-11472-82-8571636
1-344-263213-53-3370
1-469-52-20546256
1-5915-94-821288
1-61224-146-216
1-71635-232
1-82050
1-925
1-10