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A338797 as a triangular array

1
21
361
44121
51015201
63212301
714212835421
882484024561
918936451863721
10530202157040901
1122334455667788991101

A338797 as a square array

1234567891011
16410314818522
112152212493033
12012288362044
130354045255
14224181566
156637077
1724088
19099
1110
1
1234567891011
16410314818522
112152212493033
12012288362044
130354045255
14224181566
156637077
1724088
19099
1110
1