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A153861 as a triangular array

1
11
231
3641
4101051
515201561
62135352171
7285670562881
83684126126843691
94512021025221012045101
105516533046246233016555111

A153861 as a square array

112345678910
13610152128364555
141020355684120165
15153570126210330
162156126252462
172884210462
1836120330
1945165
11055
111
1
112345678910
13610152128364555
141020355684120165
15153570126210330
162156126252462
172884210462
1836120330
1945165
11055
111
1