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A341511 as a triangular array

1
23
345
4569
56987
69871015
7101512251811
87101512251627
987101512271825
10151225182714111621
1114212035304924455013
122518271611202114353645
132233285542774063701216017

A341511 as a square array

12345678910111213
34569107815142522
56981510712211833
98712151025202728
71025121518351655
1518251227301142
11162714492077
271811242140
2516451463
21503570
1336121
4560
17
12345678910111213
34569107815142522
56981510712211833
98712151025202728
71025121518351655
1518251227301142
11162714492077
271811242140
2516451463
21503570
1336121
4560
17