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A203631 as a simple table

na(n)
12
24
34
42
58
612
76
832
956
1032
11160
12270
13150
14840
151512
16882
174704
188232
194704
2026880
2148960
2228800
23158400
24282150
25163350
26943800
271730300
281022450
295725720
3010306296
316012006
3234978944
3364393056
3438158848
35216233472
36391923168

[2,4,4,2,8,12,6,32,56,32,160,270,150,840,1512,882,
 4704,8232,4704,26880,48960,28800,158400,282150,
 163350,943800,1730300,1022450,5725720,10306296,
 6012006,34978944,64393056,38158848,216233472,
 391923168]