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A191540 as a triangular array

1
23
584
1422116
396231167
1101758745199
311494246127532510
8791397695359149702812
2486395119651015421197793313
703111175555728701190557223933615
1988631607

A191540 as a square array

12514391103118792486703119886
382262175494139739511117531607
411318724669519655557
6164512735910152870
719531494211190
92570197557
102879223
123393
1336
15
12514391103118792486703119886
382262175494139739511117531607
411318724669519655557
6164512735910152870
719531494211190
92570197557
102879223
123393
1336
15