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A067418 as a simple table

na(n)
01
12
21
35
43
52
610
77
85
93
1020
1115
1212
138
145
1538
1630
1725
1819
1913
208
2171
2258
2350
2440
2531
2621
2713
28130
29109
3096
3180
3265
3350
3434
3521
36235
37201
38180
39154
40130
41105
4281
4355
4434
45420
46365
47331
48289
49250
50210
51170
52131
5389
5455
55744
56655
57600
58532
59469
60404
61340
62275
63212
64144
6589
661308
671164
681075
69965

[1,2,1,5,3,2,10,7,5,3,20,15,12,8,5,38,30,25,19,13,
 8,71,58,50,40,31,21,13,130,109,96,80,65,50,34,21,
 235,201,180,154,130,105,81,55,34,420,365,331,289,
 250,210,170,131,89,55,744,655,600,532,469,404,340,
 275,212,144,89,1308,1164,1075,965]