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A046757 as a triangular array

1
21
551
3030101
272272102171
325032501300260261
4795247952199804440555371
84035084035036015085750122501050501
170393601703936074547201863680291200291201820651
392203458

A046757 as a square array

1253027232504795284035017039360392203458
153027232504795284035017039360
1101021300199803601507454720
1172604440857501863680
12655512250291200
137105029120
1501820
165
1
1253027232504795284035017039360392203458
153027232504795284035017039360
1101021300199803601507454720
1172604440857501863680
12655512250291200
137105029120
1501820
165
1