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A307239 as a triangular array

1
11
121
1331
12621
132231
1252521
13777731
12101414141021
136614146631
12361014106321
135326623531
1222526252221

A307239 as a square array

1111111111111
123232323232
136257106352
12227146632
135714141025
12714141462
131061066
126622
13335
1252
132
12
1
1111111111111
123232323232
136257106352
12227146632
135714141025
12714141462
131061066
126622
13335
1252
132
12
1