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A206063 as a simple table

na(n)
1256
22184
32184
419832
521140
619832
7170688
8167960
9167960
10170688
111499080
121390488
131278672
141390488
151499080
1613136860
1711638960
1811155584
1911155584
2011638960
2113136860
22114770680
2396831504
24101369476
25111242648
26101369476

[256,2184,2184,19832,21140,19832,170688,167960,
 167960,170688,1499080,1390488,1278672,1390488,
 1499080,13136860,11638960,11155584,11155584,
 11638960,13136860,114770680,96831504,101369476,
 111242648,101369476]