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A168391 as a simple table

na(n)
11
21
32
42
55
65
76
819
921
1014
1124
1284
13126
1484
1542
16120
17468
18750
19720
20330
21132
22720
232988
245496
255445
263795
271287
28429
295040
3022356
3143120
3250435
3335035
3419019
355005
361430
3740320
38186912
39391688
40472472
41398398
42208208
4392092
4419448
454862

[1,1,2,2,5,5,6,19,21,14,24,84,126,84,42,120,468,
 750,720,330,132,720,2988,5496,5445,3795,1287,429,
 5040,22356,43120,50435,35035,19019,5005,1430,
 40320,186912,391688,472472,398398,208208,92092,
 19448,4862]