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A306926 as a triangular array

11
1319
172317
19311913
3741712313
414373292323
53477937733117
5953975979433717
61591037189107531931
67671499717912759474313
71711511032231316161

A306926 as a square array

1113171937415359616771
19233141434753596771
171971737997103149151
13232937597197103
1323737989179223
233143107127131
1737535961
17194761
3143
13
1113171937415359616771
19233141434753596771
171971737997103149151
13232937597197103
1323737989179223
233143107127131
1737535961
17194761
3143
13