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A003958 as a simple table

na(n)
11
21
32
41
54
62
76
81
94
104
1110
122
1312
146
158
161
1716
184
1918
204
2112
2210
2322
242
2516
2612
278
286
2928
308
3130
321
3320
3416
3524
364
3736
3818
3924
404
4140
4212
4342
4410
4516
4622
4746
482
4936
5016
5132
5212
5352
548
5540
566
5736
5828
5958
608
6160
6230
6324
641
6548
6620
6766
6816
6944
7024
7170
724
7372
7436
7532
7618
7760
7824
7978
804
8116

[1,1,2,1,4,2,6,1,4,4,10,2,12,6,8,1,16,4,18,4,12,
 10,22,2,16,12,8,6,28,8,30,1,20,16,24,4,36,18,24,4,
 40,12,42,10,16,22,46,2,36,16,32,12,52,8,40,6,36,
 28,58,8,60,30,24,1,48,20,66,16,44,24,70,4,72,36,
 32,18,60,24,78,4,16]