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A246696 as a triangular array

1
23
547
69811
1310151217
141916211823
25202722292431
2633283530373239
413443364538474049
42514453465548575059
6152635465566758696071
62

A246696 as a square array

12561314252641426162
34910192033345152
7815162728434463
1112212235365354
17182930454665
232437385556
3132474867
39405758
495069
5960
71
12561314252641426162
34910192033345152
7815162728434463
1112212235365354
17182930454665
232437385556
3132474867
39405758
495069
5960
71