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A369878 as a triangular array

1
21
321
4341
54941
6516981
76251627121
8736256493201
984936125304243321
1096449216705928699601
1110816434313562405438420191041

A369878 as a square array

1234567891011
12345678910
149162536496481
1491625364964
182764125216343
112933047051356
1202439282405
1326994384
1602019
1104
1
1234567891011
12345678910
149162536496481
1491625364964
182764125216343
112933047051356
1202439282405
1326994384
1602019
1104
1