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A050157 as a triangular array

1
12
256
5141920
1442626970
42132207242251252
132429704858912923924
4291430243130683341341834313432
143048628502110501231012750128541286912870

A050157 as a square array

112514421324291430
25144213242914304862
6196220770424318502
2069242858306811050
70251912334112310
252923341812750
924343112854
343212869
12870
112514421324291430
25144213242914304862
6196220770424318502
2069242858306811050
70251912334112310
252923341812750
924343112854
343212869
12870