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A101858 as a triangular array

2
55
7137
10181810
1326252613
153436363415
18394752473918
2047546868544720
235265788978655223
2660729410210294726026
286883104123117123104836828
317394120

A101858 as a square array

257101315182023262831
513182634394752606873
7182536475465728394
10263652687894104120
1334476889102123
15395478102117
18476594123
205272104
236083
2668
28
257101315182023262831
513182634394752606873
7182536475465728394
10263652687894104120
1334476889102123
15395478102117
18476594123
205272104
236083
2668
28