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A065668 as a simple table

na(n)
11
22815
33
44
594
66
77
88
91279
1046
11382
1212
1313
1414
1515
1616
1717
18154
19160
2011773
21751
22190
231534
2424
2525
2626
2727
2828
2929
3030
3131
3232
3333
3434
3535
362431
37157
3810485760
39328
40724
4147110
42748
4323
443040
453055
46766
476142
4848
4949
5050
5151
5252
5353
5454
5555
5656
5757
5858

[1,2815,3,4,94,6,7,8,1279,46,382,12,13,14,15,16,
 17,154,160,11773,751,190,1534,24,25,26,27,28,29,
 30,31,32,33,34,35,2431,157,10485760,328,724,47110,
 748,23,3040,3055,766,6142,48,49,50,51,52,53,54,55,
 56,57,58]