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A320051 as a triangular array

3
51
726
1041272
11815144120
139202881801800
1416244002403528840
171828450252405010803600
1925305763365184126072002520
2132356483607056144014112504028800
22364080037881001680144005544

A320051 as a square array

3571011131417192122
124891618253236
61215202428303540
72144288400450576648800
120180240252336360378
180035284050518470568100
8401080126014401680
360072001411214400
252050405544
28800
3571011131417192122
124891618253236
61215202428303540
72144288400450576648800
120180240252336360378
180035284050518470568100
8401080126014401680
360072001411214400
252050405544
28800