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A186987 as a simple table

na(n)
11
22
34
44
510
64
718
811
919
1010
1142
1211
1358
1421
1530
1633
1796
1822
19120
2036
2162
2248
23172
2437
25147
2669
27128
2870
29270
3037
31308
32123
33158
34117
35208
3675
37432
38147
39218
40119
41530
4278
43584
44186
45228
46212
47696
48133
49594
50191
51380
52256
53882
54166
55547

[1,2,4,4,10,4,18,11,19,10,42,11,58,21,30,33,96,22,
 120,36,62,48,172,37,147,69,128,70,270,37,308,123,
 158,117,208,75,432,147,218,119,530,78,584,186,228,
 212,696,133,594,191,380,256,882,166,547]