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A209798 as a simple table

na(n)
12
25
312
433
5108
6411
71760
88287
942302
10231959
111357150
128427205
1355288886
14381798657
152765917104
1620960284309
17165729739624
181364153612335
1911665484410132
20103448316470763
21949739632313522
229013431476894667
2388304011710168714
24891917738589610601

[2,5,12,33,108,411,1760,8287,42302,231959,1357150,
 8427205,55288886,381798657,2765917104,20960284309,
 165729739624,1364153612335,11665484410132,
 103448316470763,949739632313522,9013431476894667,
 88304011710168714,891917738589610601]