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A261507 as a simple table

na(n)
01
11
21
31
41
51
62
71
81
93
103
111
121
135
1410
1510
165
171
181
198
2028
2156
2270
2356
2428
258
261
271
2813
2978
30286
31715
321287
331716
341716
351287
36715
37286
3878
3913
401
411
4221
43210
441330
455985
4620349
4754264
48116280
49203490
50293930
51352716
52352716
53293930
54203490
55116280
5654264
5720349
585985
591330
60210
6121
621

[1,1,1,1,1,1,2,1,1,3,3,1,1,5,10,10,5,1,1,8,28,56,
 70,56,28,8,1,1,13,78,286,715,1287,1716,1716,1287,
 715,286,78,13,1,1,21,210,1330,5985,20349,54264,
 116280,203490,293930,352716,352716,293930,203490,
 116280,54264,20349,5985,1330,210,21,1]