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A055538 as a simple table

na(n)
34
420
565
6170
7383
8779
91470
102611
114418
127182
1311283
1417213
1525601
1637230
1753074
1874327
19102434
20139133
21186501
22246988
23323479
24419344
25538492
26685438
27865376
281084236
291348777
301666664
312046551
322498179
333032482
343661673
354399374

[4,20,65,170,383,779,1470,2611,4418,7182,11283,
 17213,25601,37230,53074,74327,102434,139133,
 186501,246988,323479,419344,538492,685438,865376,
 1084236,1348777,1666664,2046551,2498179,3032482,
 3661673,4399374]