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A120406 as a simple table

na(n)
01
12
22
35
46
55
614
718
818
914
1042
1156
1260
1356
1442
15132
16180
17200
18200
19180
20132
21429
22594
23675
24700
25675
26594
27429
281430
292002
302310
312450
322450
332310
342002
351430
364862
376864
388008
398624
408820
418624
428008
436864
444862

[1,2,2,5,6,5,14,18,18,14,42,56,60,56,42,132,180,
 200,200,180,132,429,594,675,700,675,594,429,1430,
 2002,2310,2450,2450,2310,2002,1430,4862,6864,8008,
 8624,8820,8624,8008,6864,4862]