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A301853 as a triangular array

1
23
356
47910
59121415
61115171920
7131821242627
815212529313334
91724293336394142
10192733384245485051
1121303743485155586061
122333414853576165687071

A301853 as a square array

123456789101112
357911131517192123
691215182124273033
101417212529333741
1519242933384348
20263136424853
273339455157
3441485561
42505865
516068
6170
71
123456789101112
357911131517192123
691215182124273033
101417212529333741
1519242933384348
20263136424853
273339455157
3441485561
42505865
516068
6170
71