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A137884 as a simple table

na(n)
12
210
3144
46094
5530068
684884502
722386625160
89099505341966
95391573454232108
104469933447616285558

[2,10,144,6094,530068,84884502,22386625160,
 9099505341966,5391573454232108,
 4469933447616285558]