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A087644 as a triangular array

1
13
1612
1103660
11586240360
12117675618002520
128323198870921512020160
13654745722299671856141120181440
14587194956414427882078782414515201814400
155132118205159094

A087644 as a square array

1111111111
3610152128364555
1236861763235478711321
6024075619884572949518205
360180070922299664144159094
25201512071856278820
20160141120787824
1814401451520
1814400
1111111111
3610152128364555
1236861763235478711321
6024075619884572949518205
360180070922299664144159094
25201512071856278820
20160141120787824
1814401451520
1814400