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A217781 as a triangular array

1
11
211
4311
96311
20167411
4837189411
11596442810511
286239117713213511
719622299202894514611
184216077935422641305217611

A217781 as a square array

1124920481152867191842
11361637962396221607
11371844117299793
11492871202542
114103289264
1151345130
1151452
11617
116
11
1
1124920481152867191842
11361637962396221607
11371844117299793
11492871202542
114103289264
1151345130
1151452
11617
116
11
1