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A139601 as a triangular array

0
01
013
0146
015910
016121615
01715222521
0181828353628
019213445514936
011024405566706445
01112746658191928155
01123052759611212011710066

A139601 as a square array

000000000000
11111111111
3456789101112
6912151821242730
1016222834404652
15253545556575
213651668196
28497091112
366492120
4581117
55100
66
000000000000
11111111111
3456789101112
6912151821242730
1016222834404652
15253545556575
213651668196
28497091112
366492120
4581117
55100
66