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A237671 as a simple table

na(n)
21
33
416
56
620
724
816
936
10120
11300
1220
13288
1428
15192
16200
17552
18180
19192
20180
211380
22224
2360
241728
25912
263800
27756
28576
291776
304102
3115480
323540
331344
3410800
3514328
36800
372304
381520
391890
401232
4111280
429040
4331152
4449544
453660
466360
473696
4813248
4921408

[1,3,16,6,20,24,16,36,120,300,20,288,28,192,200,
 552,180,192,180,1380,224,60,1728,912,3800,756,576,
 1776,4102,15480,3540,1344,10800,14328,800,2304,
 1520,1890,1232,11280,9040,31152,49544,3660,6360,
 3696,13248,21408]