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A175344 as a triangular array

1
21
312
4213
51234
621345
7312456
84213567
912345678
10213456789
1131245678910
124213567891011
13512346789101112

A175344 as a square array

12345678910111213
112123412345
21211221121
3332133212
444344433
55555554
6666666
777777
88888
9999
101010
1111
12
12345678910111213
112123412345
21211221121
3332133212
444344433
55555554
6666666
777777
88888
9999
101010
1111
12