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A085881 as a simple table

na(n)
01
11
21
33
46
53
615
745
845
915
10105
11420
12630
13420
14105
15945
164725
179450
189450
194725
20945
2110395
2262370
23155925
24207900
25155925
2662370
2710395
28135135
29945945
302837835
314729725
324729725
332837835
34945945
35135135
362027025
3716216200
3856756700
39113513400
40141891750
41113513400
4256756700
4316216200
442027025

[1,1,1,3,6,3,15,45,45,15,105,420,630,420,105,945,
 4725,9450,9450,4725,945,10395,62370,155925,207900,
 155925,62370,10395,135135,945945,2837835,4729725,
 4729725,2837835,945945,135135,2027025,16216200,
 56756700,113513400,141891750,113513400,56756700,
 16216200,2027025]