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A131632 as a simple table

na(n)
11
21
31
43
51
64
71
815
91
1021
1160
121
1363
14105
151
1692
17448
181
19255
202016
211
22385
234980
2412600
251
261023
2715675
2827720
291
301585
3161644
32138600
331
344095
35155155
36643500
371
386475
39482573
404408404
411
4216383
431733550
4412687675
4537837800
461
4726332
484549808
4960780720

[1,1,1,3,1,4,1,15,1,21,60,1,63,105,1,92,448,1,255,
 2016,1,385,4980,12600,1,1023,15675,27720,1,1585,
 61644,138600,1,4095,155155,643500,1,6475,482573,
 4408404,1,16383,1733550,12687675,37837800,1,26332,
 4549808,60780720]