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A208358 as a simple table

na(n)
11
22
34
418
5110
6772
75936
848618
9417398
103716972
1134086194
12320225348
133069943298
1429943487732
15296447910268
162973356043818
1730166687749922
18309197338572932
193198206243665998
2033353864893990660
21350443763627186256
223707087785160487888
2339458245623693926384
24422389058260155207568

[1,2,4,18,110,772,5936,48618,417398,3716972,
 34086194,320225348,3069943298,29943487732,
 296447910268,2973356043818,30166687749922,
 309197338572932,3198206243665998,
 33353864893990660,350443763627186256,
 3707087785160487888,39458245623693926384,
 422389058260155207568]