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A173111 as a simple table

na(n)
01
11
22
31
45
51
615
72
83
952
105
113
12203
1315
146
156
16877
1752
1815
196
204140
21203
2245
2312
2420
2521147
26877
27156
2830
2920
30115975
314140
32609
3390
3440
3560
36678570
3721147
382631
39312
40100
4160

[1,1,2,1,5,1,15,2,3,52,5,3,203,15,6,6,877,52,15,6,
 4140,203,45,12,20,21147,877,156,30,20,115975,4140,
 609,90,40,60,678570,21147,2631,312,100,60]