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A055597 as a simple table

na(n)
10
20
31
43
55
66
77
810
910
1011
1112
1214
1316
1417
1517
1621
1725
1826
1927
2029
2129
2230
2331
2434
2534
2635
2735
2837
2939
3040
3141
3246
3346
3447
3547
3649
3751
3852
3952
4055
4158
4259
4360
4462
4562
4663
4764
4868
4968
5069
5169
5271
5373
5474
5574
5677
5777
5878
5979
6081
6183
6284
6384
6490
6590
6691
6792
6894
6994
7095
7196

[0,0,1,3,5,6,7,10,10,11,12,14,16,17,17,21,25,26,
 27,29,29,30,31,34,34,35,35,37,39,40,41,46,46,47,
 47,49,51,52,52,55,58,59,60,62,62,63,64,68,68,69,
 69,71,73,74,74,77,77,78,79,81,83,84,84,90,90,91,
 92,94,94,95,96]