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A191709 as a triangular array

1
32
547
861012
119141617
151319212322
20182528302927
2624333639383532
343143465049454137
44405559646358534842
5651707581807468615447
71

A191709 as a square array

13581115202634445671
2469131824314051
71014192533435570
1216212836465975
17233039506481
222938496380
2735455874
32415368
374861
4254
47
13581115202634445671
2469131824314051
71014192533435570
1216212836465975
17233039506481
222938496380
2735455874
32415368
374861
4254
47