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A145805 as a simple table

na(n)
10
20
30
41
51
61
73
83
94
106
116
127
1310
1410
1512
1615
1715
1817
1921
2021
2124
2228
2328
2431
2536
2636
2740
2845
2946
3050

[0,0,0,1,1,1,3,3,4,6,6,7,10,10,12,15,15,17,21,21,
 24,28,28,31,36,36,40,45,46,50]