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A351785 as a triangular array

0
11
242
3333
46164
554455
616656166
77777777
81851816185188
9916161717161699
1012101718201817101210
111111111919191911111111

A351785 as a square array

01234567891011
143651671891211
2314675161011
3645718161711
456716171819
516718172019
675161819
718161719
891011
91211
1011
11
01234567891011
143651671891211
2314675161011
3645718161711
456716171819
516718172019
675161819
718161719
891011
91211
1011
11