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A217580 as a triangular array

1
01
301
54901
38612161801
1028700193055403001
106751058361722005791510804501
439055219723474725740812160270013513518906301
7202243967217316135124417577872298902963245760720027027030248401

A217580 as a square array

10354386110287001067510583439055219723472022439672173161
109216193056172200747257408135124417577872
1018540579152160270029890296324
1030108013513557607200
10451890270270
10633024
1084
10
1
10354386110287001067510583439055219723472022439672173161
109216193056172200747257408135124417577872
1018540579152160270029890296324
1030108013513557607200
10451890270270
10633024
1084
10
1