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A039799 as a simple table

na(n)
10
20
30
41
51
62
73
86
96
109
1110
1212
1314
1417
1519
1621
1723
1825
1927
2029
2131
2233
2335
2437
2539
2641
2743
2845
2947
3049
3151
3253
3355
3457
3559
3661
3763
3865
3967
4069
4171
4273
4375
4477
4579
4681
4783
4885
4987
5089
5191
5293
5395
5497
5599
56101
57103
58105
59107
60109
61111
62113
63115
64117
65119

[0,0,0,1,1,2,3,6,6,9,10,12,14,17,19,21,23,25,27,
 29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,
 61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,
 93,95,97,99,101,103,105,107,109,111,113,115,117,
 119]