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A055252 as a triangular array

1
41
1351
381861
104562471
272160803181
6884322401113991
1696112067235115048101
409628161792102350119858111
9728691246082815152469925669121
227841664011520

A055252 as a square array

14133810427268816964096972822784
15185616043211202816691216640
1624802406721792460811520
173111135110232815
18391505011524
1948198699
11058256
11169
112
1
14133810427268816964096972822784
15185616043211202816691216640
1624802406721792460811520
173111135110232815
18391505011524
1948198699
11058256
11169
112
1