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A238801 as a triangular array

1
20
301
4040
501001
6020060
703502101
8056056080
9084012603601
100120025201200100
1101650462033005501
1202200792079202200120

A238801 as a square array

123456789101112
00000000000
141020355684120165220
000000000
162156126252462792
0000000
1836120330792
00000
11055220
000
112
0
123456789101112
00000000000
141020355684120165220
000000000
162156126252462792
0000000
1836120330792
00000
11055220
000
112
0