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A336814 as a simple table

na(n)
21
31
46
55
65
721
84
91
109
1155
126
1339
1491
15105
1640
1717
18153
19171
20190
2121
2221
23253
24276
2515
2613
27351
2842
29203
3087
31465
32496
3311
3433
35595
3610
37111
3837
39741
40780
4141
42287
43301
44946
455
46207
471081
48376
49294
5035
51425
521326
53689
54477
5533
561540
57133
58551
591711
601770
61915
621891
631953
64224

[1,1,6,5,5,21,4,1,9,55,6,39,91,105,40,17,153,171,
 190,21,21,253,276,15,13,351,42,203,87,465,496,11,
 33,595,10,111,37,741,780,41,287,301,946,5,207,
 1081,376,294,35,425,1326,689,477,33,1540,133,551,
 1711,1770,915,1891,1953,224]