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A098915 as a simple table

na(n)
12
22
32
424
52
650
76
826
914
10306
1186
12846
13104
141832
15272
162222
172540
18884
195474
201950
2128358
2213338
2376740

[2,2,2,24,2,50,6,26,14,306,86,846,104,1832,272,
 2222,2540,884,5474,1950,28358,13338,76740]