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A306997 as a simple table

na(n)
10
20
30
41
52
62
73
82
93
105
114
126
136
145
153
165
176
187
1910
2010
219
227
238
2412
2510
269
279
2810
2913
3010
318
3211
3312
3412
3514
3612
3714
3816
3917
4011
4116
4217
4316
4414
4515
4617
4717
4814
4918
5017
5118
5221
5321
5420
5520
5617
5718
5819
5920
6018
6117
6221
6323
6423
6517
6624
6726
6823
6925
7024
7123
7225
7324
7424
7529
7625
7726
7826
7928
8028
8126
8233
8330
8425
8525
8630
8731
8825
8925
9031
9123
9229
9330
9430
9530

[0,0,0,1,2,2,3,2,3,5,4,6,6,5,3,5,6,7,10,10,9,7,8,
 12,10,9,9,10,13,10,8,11,12,12,14,12,14,16,17,11,
 16,17,16,14,15,17,17,14,18,17,18,21,21,20,20,17,
 18,19,20,18,17,21,23,23,17,24,26,23,25,24,23,25,
 24,24,29,25,26,26,28,28,26,33,30,25,25,30,31,25,
 25,31,23,29,30,30,30]