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A208920 as a triangular array

1
23
377
4122619
518628547
625120235264123
733205515879803311
842322980225430382358803
9524761694491487081015668652047
10636722730957620958326403287719588

A208920 as a square array

12345678910
3712182533425263
72662120205322476672
198523551598016942730
47264879225449149576
1238033038870820958
31123581015632640
803686532877
204719588
12345678910
3712182533425263
72662120205322476672
198523551598016942730
47264879225449149576
1238033038870820958
31123581015632640
803686532877
204719588

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Last modified September 24 11:34 EDT 2024. Contains 376196 sequences. (Running on oeis4.)