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A191731 as a triangular array

1
32
845
199136
482333147
1195883341810
29814420884442411
744359519209109592812
18598981298523273148692915
4648224432441308683369173733816
1161956098109

A191731 as a square array

13819481192987441859464811619
249235814435989822445609
5133383208519129832448109
61434842095231308
71844109273683
102459148369
112869173
122973
1538
16
13819481192987441859464811619
249235814435989822445609
5133383208519129832448109
61434842095231308
71844109273683
102459148369
112869173
122973
1538
16