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A171853 as a simple table

na(n)
00
10
20
31
43
58
620
749
8119
9291
10715
111768
124396
1310983
1427551
1569351
16175081
17443119
181123963
192856383
207271377
2118538391
2247327615
23120972510
24309555666
25792917565
262032905981
275216436109
2813395813003
2934425270629
3088527064337

[0,0,0,1,3,8,20,49,119,291,715,1768,4396,10983,
 27551,69351,175081,443119,1123963,2856383,7271377,
 18538391,47327615,120972510,309555666,792917565,
 2032905981,5216436109,13395813003,34425270629,
 88527064337]