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A116666 as a triangular array

1
13
165
19157
11230289
11550704511
118751401356613
1211052453152319115
12414039263061636412017
12718058811341386109254015319
13022584018902772

A116666 as a square array

11111111111
36912151821242730
515305075105140180225
72870140245392588840
94513531563011341890
116623161613862772
13913641092
15120540
17153
19
11111111111
36912151821242730
515305075105140180225
72870140245392588840
94513531563011341890
116623161613862772
13913641092
15120540
17153
19