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A209722 as a simple table

na(n)
14
25
36
48
510
614
718
826
934
1050
1166
1298
13130
14194
15258
16386
17514
18770
191026
201538
212050
223074
234098
246146
258194
2612290
2716386
2824578
2932770
3049154
3165538
3298306
33131074
34196610
35262146
36393218
37524290
38786434
391048578
401572866
412097154
423145730

[4,5,6,8,10,14,18,26,34,50,66,98,130,194,258,386,
 514,770,1026,1538,2050,3074,4098,6146,8194,12290,
 16386,24578,32770,49154,65538,98306,131074,196610,
 262146,393218,524290,786434,1048578,1572866,
 2097154,3145730]