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A003520 as a simple table

na(n)
01
11
21
31
41
52
63
74
85
96
108
1111
1215
1320
1426
1534
1645
1760
1880
19106
20140
21185
22245
23325
24431
25571
26756
271001
281326
291757
302328
313084
324085
335411
347168
359496
3612580
3716665
3822076
3929244
4038740
4151320
4267985
4390061
44119305
45158045
46209365
47277350
48367411
49486716
50644761

[1,1,1,1,1,2,3,4,5,6,8,11,15,20,26,34,45,60,80,
 106,140,185,245,325,431,571,756,1001,1326,1757,
 2328,3084,4085,5411,7168,9496,12580,16665,22076,
 29244,38740,51320,67985,90061,119305,158045,
 209365,277350,367411,486716,644761]