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A174829 as a triangular array

1
12
134
1467
157911
169121416
171013161921
18121518212427
1913172124273033
1101520252832353942
111162126303438424650
11218232833384246505458

A174829 as a square array

111111111111
23456789101112
4679101213151618
7912131517202123
1114161821252628
16192124283033
212427323438
2730353842
33394246
424650
5054
58
111111111111
23456789101112
4679101213151618
7912131517202123
1114161821252628
16192124283033
212427323438
2730353842
33394246
424650
5054
58