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A120578 as a simple table

na(n)
14
21
32
47
514
628
78
856
93
105
116
1210
1312
1415
1520
1624
1730
1840
1960
20120
2131
2293
23155
24465
2513
2639
27403
281209
2917
30169
31221
322873
3321
34293
35879
362051
376153
3825
3950
40311
41622
421555
433110
447775
4515550
4637
4743
4874
4986
50148
51172
52259
53301
54518
55602
561036
571204
581591

[4,1,2,7,14,28,8,56,3,5,6,10,12,15,20,24,30,40,60,
 120,31,93,155,465,13,39,403,1209,17,169,221,2873,
 21,293,879,2051,6153,25,50,311,622,1555,3110,7775,
 15550,37,43,74,86,148,172,259,301,518,602,1036,
 1204,1591]