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A303138 as a triangular array

1
01
101
1001
20001
210001
4000001
41000001
601000001
7200000001
110000000001
1021100000001
17000000000001
174000000000001
230201

A303138 as a square array

10112244671110171723
10001010202040
1000001001002
100000001000
10000000001
100000000
10000000
1000000
100000
10000
1000
100
10
1
10112244671110171723
10001010202040
1000001001002
100000001000
10000000001
100000000
10000000
1000000
100000
10000
1000
100
10
1