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A181417 as a simple table

na(n)
11
21
32
41
512
66
71
824
918
10108
1124
121
1340
1480
15360
16540
17960
18120
191
2060
21150
22100
23900
243600
25900
264800
2710800
289000
29720
301
3184
32252
33420
341890
359450
366300
379450
3816800
39100800
4050400
4163000
42189000
4390720
445040
451
46112
47392
48784
49490
503528
5121168
5235280
5326460
5435280
5547040
56352800
57235200
58705600
5988200
60294000
612352000
621764000
63846720
643175200
65987840
6640320
671
68144
69576
701344
712016
726048
7342336

[1,1,2,1,12,6,1,24,18,108,24,1,40,80,360,540,960,
 120,1,60,150,100,900,3600,900,4800,10800,9000,720,
 1,84,252,420,1890,9450,6300,9450,16800,100800,
 50400,63000,189000,90720,5040,1,112,392,784,490,
 3528,21168,35280,26460,35280,47040,352800,235200,
 705600,88200,294000,2352000,1764000,846720,
 3175200,987840,40320,1,144,576,1344,2016,6048,
 42336]