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A155998 as a triangular array

0
11
040
1331
08080
15101051
0120400120
172135352171
016011201120160
193684126126843691
0200240050402400200

A155998 as a square array

01010101010
1438512716920
030100210360
1810403511284240
0503501260
11221112126504
070840
11636240
090
120
0
01010101010
1438512716920
030100210360
1810403511284240
0503501260
11221112126504
070840
11636240
090
120
0