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A215904 as a simple table

na(n)
11
21
31
42
51
62
72
82
92
102
115
125
1315
145
155
165
1715
1842
1942
2015
215
2215
2352
24726
25602
26726
2752
2815
2915
30203
312906
3212840
3312840
342906
35203
3615
3752
38877
3984550
40373780
412387217
42373780
4384550
44877
4552
4652
474140
48433252
4914050312
5087852626
5187852626
5214050312
53433252

[1,1,1,2,1,2,2,2,2,2,5,5,15,5,5,5,15,42,42,15,5,
 15,52,726,602,726,52,15,15,203,2906,12840,12840,
 2906,203,15,52,877,84550,373780,2387217,373780,
 84550,877,52,52,4140,433252,14050312,87852626,
 87852626,14050312,433252]