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A193907 as a triangular array

1
21
852
231483
633923135
1671036337218
440272167102603413
1154713440270165975521
3024186911547124372671578934
7919489430241867115270743225414455
2073512815

A193907 as a square array

128236316744011543024791920735
1514391032727131869489412815
28236316744011543024
313371022707121867
521601654371152
83497267707
1355157432
2189254
34144
55
128236316744011543024791920735
1514391032727131869489412815
28236316744011543024
313371022707121867
521601654371152
83497267707
1355157432
2189254
34144
55