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A183534 as a triangular array

1
12
123
1234
12366
123498
1234101011
12345161113
1234515171216
12345625182818
1234562126192926
12345673627223028
1234567283728645336

A183534 as a square array

1111111111111
222222222222
33333333333
4644444444
6910555555
81016156666
111117252177
131218263628
1628192737
18292228
263064
2853
36
1111111111111
222222222222
33333333333
4644444444
6910555555
81016156666
111117252177
131218263628
1628192737
18292228
263064
2853
36