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A191710 as a triangular array

1
23
458
671113
910151718
121420222423
16192629313028
2125343740393633
273244475150464238
35415660656459544943
4552717682817569625548
57

A191710 as a square array

1246912162127354557
35710141925324152
81115202634445671
1317222937476076
18243140516582
233039506481
2836465975
33425469
384962
4355
48
1246912162127354557
35710141925324152
81115202634445671
1317222937476076
18243140516582
233039506481
2836465975
33425469
384962
4355
48