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A138781 as a simple table

na(n)
11
22
33
42
53
616
732
816
93
104
1146
12200
13305
14200
1546
164
175
18100
19770
202380
213472
222380
23770
24100
255
266
27185
282230
2911600
3030240
3141244
3230240
3311600
342230
35185
366
377
38308
395362
4042140
41172795
42393008
43515332
44393008
45172795
4642140
475362
48308
497

[1,2,3,2,3,16,32,16,3,4,46,200,305,200,46,4,5,100,
 770,2380,3472,2380,770,100,5,6,185,2230,11600,
 30240,41244,30240,11600,2230,185,6,7,308,5362,
 42140,172795,393008,515332,393008,172795,42140,
 5362,308,7]