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A086905 as a simple table

na(n)
01
10
22
31
45
55
615
720
850
976
10176
11286
12638
131078
142354
154081
168789
1715521
1833099
1959279
20125477
21227239
22478193
23873885
241830271
253370029
267030571
2713027729
2827088871
2950469889
30104647631
31195892564
32405187826
33761615284
341571990936

[1,0,2,1,5,5,15,20,50,76,176,286,638,1078,2354,
 4081,8789,15521,33099,59279,125477,227239,478193,
 873885,1830271,3370029,7030571,13027729,27088871,
 50469889,104647631,195892564,405187826,761615284,
 1571990936]