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A221623 as a triangular array

1
21
631
242741
12041011251
72010055612045361
504035365473815085035181871
4032017052210148700748511496851130256727981
36288010752952204909665208057614883627345195651614576404

A221623 as a square array

12624120720504040320362880
132741010055353654170522101075295220
14112612073815014870074849096652080
15453850355114968557614883627
16181811302563451956516
17727914576404
18
1
12624120720504040320362880
132741010055353654170522101075295220
14112612073815014870074849096652080
15453850355114968557614883627
16181811302563451956516
17727914576404
18
1