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A098469 as a simple table

na(n)
01
12
26
320
478
5332
61516
77240
835734
9180620
10929940
114858328
1225687052
13137177016
14738819672
154008435984
1621886788582
17120178329740
18663179894788
193675923244856
2020456707469540
21114254175491304
22640223315385576

[1,2,6,20,78,332,1516,7240,35734,180620,929940,
 4858328,25687052,137177016,738819672,4008435984,
 21886788582,120178329740,663179894788,
 3675923244856,20456707469540,114254175491304,
 640223315385576]