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A187988 as a simple table

na(n)
10
20
31
40
52
63
70
83
95
109
110
124
137
1415
1536
160
175
189
1922
2057
21117
220
236
2411
2530
2682
27181
28411
290
307
3113
3239
33111
34260
35632
361452
370
388
3915
4049
41144
42355
43912
442199
455040
460
479
4817
4960
50181
51467
521257
533158
547593
5517829
560
5710
5819
5972
60222
61597
621673
634357
6410920
6526706
6662870

[0,0,1,0,2,3,0,3,5,9,0,4,7,15,36,0,5,9,22,57,117,
 0,6,11,30,82,181,411,0,7,13,39,111,260,632,1452,0,
 8,15,49,144,355,912,2199,5040,0,9,17,60,181,467,
 1257,3158,7593,17829,0,10,19,72,222,597,1673,4357,
 10920,26706,62870]