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A209631 as a triangular array

0
11
112
1133
114104
11520415
116331271966
1174928096710577
118685182883854963228
1199085966893481785829413939
1110115132113310101841481477

A209631 as a square array

01111111111
1111111111
2345678910
3102033496890115
4411272805188591321
51969672883668913310
61057854934817101841
7632285829481477
841393
9
01111111111
1111111111
2345678910
3102033496890115
4411272805188591321
51969672883668913310
61057854934817101841
7632285829481477
841393
9