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A023821 as a simple table

na(n)
20
32
43
53
66
75
86
98
108
119
1211
139
1410
1510
1612
1711
1812
1913
2013
2114
2217
2315
2417
2517
2616
2718
2819
2917
3020
3117
3219
3321
3419
3519
3622
3720
3820
3921
4022
4121
4223
4326
4426
4528
4629
4725
4829
4928
5027
5128
5229
5326
5432
5531
5631
5732
5830
5931
6033
6133
6231
6331
6435
6533
6632
6730
6831
6932
7036
7132
7235
7334
7433
7538
7637
7735
7838
7935

[0,2,3,3,6,5,6,8,8,9,11,9,10,10,12,11,12,13,13,14,
 17,15,17,17,16,18,19,17,20,17,19,21,19,19,22,20,
 20,21,22,21,23,26,26,28,29,25,29,28,27,28,29,26,
 32,31,31,32,30,31,33,33,31,31,35,33,32,30,31,32,
 36,32,35,34,33,38,37,35,38,35]