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A047973 as a simple table

na(n)
11
22
33
41
53
65
79
88
94
102
114
1210
1314
1416
1517
1611
175
183
193
207
219
2215
2319
2425
2528
2624
2722
2818
2916
3012
312
326
3312
3414
3524
3626
3732
3838
3942
4043
4137
4235
4325
4423
4519
4617
475
487
4911
5013
5117
5223
5325
5435
5541
5647
5753
5855
5961
6062
6160
6250
6336
6432
6530
6626
6712
686
694
706
7110
7216
7324
7430
7536
7640

[1,2,3,1,3,5,9,8,4,2,4,10,14,16,17,11,5,3,3,7,9,
 15,19,25,28,24,22,18,16,12,2,6,12,14,24,26,32,38,
 42,43,37,35,25,23,19,17,5,7,11,13,17,23,25,35,41,
 47,53,55,61,62,60,50,36,32,30,26,12,6,4,6,10,16,
 24,30,36,40]