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A086642 as a simple table

na(n)
10
20
31
42
53
66
79
815
922
1033
1146
1266
1389
14122
15162
16216
17281
18368
19472
20608
21772
22981
231233
241552
251934
262411
272984
283691
294537
305575

[0,0,1,2,3,6,9,15,22,33,46,66,89,122,162,216,281,
 368,472,608,772,981,1233,1552,1934,2411,2984,3691,
 4537,5575]