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A336988 as a triangular array

4
104
22124
4234124
908236124
1821949836124
38243826210036124
742103465028210036124
14862362161075428410036124
286655583870199477828410036124

A336988 as a square array

41022429018238274214862866
4123482194438103423625558
412369826265016103870
412361002827541994
41236100284778
41236100284
41236100
41236
412
4
41022429018238274214862866
4123482194438103423625558
412369826265016103870
412361002827541994
41236100284778
41236100284
41236100
41236
412
4