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A131321 as a triangular array

1
01
201
0401
50601
0140801
1302701001
04604401201
34010706501401
0145020409001601
8903930345011901801
044408540538015202001

A131321 as a square array

102050130340890
10401404601450444
106027010703930
10804402040854
101006503450
10120900538
101401190
10160152
10180
1020
10
1
102050130340890
10401404601450444
106027010703930
10804402040854
101006503450
10120900538
101401190
10160152
10180
1020
10
1