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A134827 as a simple table

na(n)
11
22
38
418
578
6206
7872
82226
910820
1026558
11129248
12335886
131630174
143990978
1521778450
1648749804
17274937594
18650637382
193598954596
207610277626
2149741540498
2293757794966
23639655810986
241233712869392
258530089042832

[1,2,8,18,78,206,872,2226,10820,26558,129248,
 335886,1630174,3990978,21778450,48749804,
 274937594,650637382,3598954596,7610277626,
 49741540498,93757794966,639655810986,
 1233712869392,8530089042832]