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A126671 as a simple table

na(n)
10
20
31
40
51
63
70
82
97
1011
110
126
1326
1446
1550
160
1724
18126
19274
20326
21274
220
23120
24744
251956
262844
272556
281764
290
30720
315160
3216008
3328092
3430708
3522212
3613068
370
385040
3941040
40147120
41304464
42401136
43351504
44212976
45109584
460
4740320

[0,0,1,0,1,3,0,2,7,11,0,6,26,46,50,0,24,126,274,
 326,274,0,120,744,1956,2844,2556,1764,0,720,5160,
 16008,28092,30708,22212,13068,0,5040,41040,147120,
 304464,401136,351504,212976,109584,0,40320]