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A211197 as a triangular array

1
24
135
2468
13579
24681012
135791113
246810121416
1357911131517
2468101214161820
13579111315171921
246810121416182022

A211197 as a square array

121212121212
43434343434
5656565656
878787878
910910910910
12111211121112
131413141314
1615161516
17181718
201920
2122
121212121212
43434343434
5656565656
878787878
910910910910
12111211121112
131413141314
1615161516
17181718
201920
2122