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A317617 as a triangular array

1
55
141516
34343434
6364656667
111111111111111111
172173174175176177178
260260260260260260260260
365366367368369370371372373
505505505505505505505505505505
666

A317617 as a square array

15143463111172260365505666
5153464111173260366505
163465111174260367505
3466111175260368505
67111176260369505
111177260370505
178260371505
260372505
373505
505
15143463111172260365505666
5153464111173260366505
163465111174260367505
3466111175260368505
67111176260369505
111177260370505
178260371505
260372505
373505
505