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A243866 as a triangular array

1
11
212
2222
32423
334433
4364634
44666644
548696845
5588998855
651081291281056
66101012121212101066
76121015

A243866 as a square array

1122334455667
112233445566
22446688101012
224466881010
336699121215
33669912
44881212
448812
551010
5510
66
6
1122334455667
112233445566
22446688101012
224466881010
336699121215
33669912
44881212
448812
551010
5510
66
6