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A157759 as a simple table

na(n)
1500001
221898963
374859849
4159382659
5275467393
6423114051
7602322633
8813093139
91055425569
101329319923
111634776201
121971794403
132340374529
142740516579
153172220553
163635486451
174130314273
184656704019
195214655689
205804169283

[500001,21898963,74859849,159382659,275467393,
 423114051,602322633,813093139,1055425569,
 1329319923,1634776201,1971794403,2340374529,
 2740516579,3172220553,3635486451,4130314273,
 4656704019,5214655689,5804169283]