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A005987 as a simple table

na(n)
01
11
21
32
43
54
66
78
812
916
1022
1129
1241
1353
1471
1593
16125
17160
18211
19270
20354
21450
22581
23735
24948
251191
261517
271902
282414
293008
303791
314709
325909
337311
349119
3511246
3613981
3717178
3821249
3926039
4032105
4139213
4248159
4358669
4471831
4587269

[1,1,1,2,3,4,6,8,12,16,22,29,41,53,71,93,125,160,
 211,270,354,450,581,735,948,1191,1517,1902,2414,
 3008,3791,4709,5909,7311,9119,11246,13981,17178,
 21249,26039,32105,39213,48159,58669,71831,87269]