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A361894 as a triangular array

1
21
321
4621
516621
63520621
7666520621
81121867020621
91764622467020621
1026110168122527020621
11370202524169172527020621
125063730643532569242527020621

A361894 as a square array

123456789101112
126163566112176261370506
1262065186462101620253730
126207024681224166435
12620702529173256
1262070252924
1262070252
1262070
12620
126
12
1
123456789101112
126163566112176261370506
1262065186462101620253730
126207024681224166435
12620702529173256
1262070252924
1262070252
1262070
12620
126
12
1