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A318423 as a triangular array

1
11
121
1221
13231
154451
1105185101
123871718231
15491261291269541
113128225280280225281311
132144691839783839691443211
17896021162717248924892717

A318423 as a square array

111111111111
12235102354131321789
1224589284460
13418711262256912116
155711292808392717
11081262807832489
12392258392489
154286912717
113144
1321
1
111111111111
12235102354131321789
1224589284460
13418711262256912116
155711292808392717
11081262807832489
12392258392489
154286912717
113144
1321
1