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A236979 as a simple table

na(n)
1256
21238
31238
46024
59854
66024
731008
876212
976212
1031008
11160764
12635960
13898820
14635960
15160764
16849024
175259146
1811850502
1911850502
205259146
21849024
224508480
2344597946
24151656752
25255242808
26151656752
2744597946
284508480

[256,1238,1238,6024,9854,6024,31008,76212,76212,
 31008,160764,635960,898820,635960,160764,849024,
 5259146,11850502,11850502,5259146,849024,4508480,
 44597946,151656752,255242808,151656752,44597946,
 4508480]