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A305321 as a simple table

na(n)
01
11
20
31
42
51
61
73
83
92
103
114
125
136
146
158
169
178
1812
1915
2014
2117
2221
2320
2424
2531
2630
2734
2842
2941
3046
3159
3263
3367
3476
3583
3694
37104
38112
39131
40144
41144
42170
43198
44201
45226
46261
47268
48291
49337
50361
51392
52437
53465
54511
55567
56607
57673
58736
59775
60861
61946
621000

[1,1,0,1,2,1,1,3,3,2,3,4,5,6,6,8,9,8,12,15,14,17,
 21,20,24,31,30,34,42,41,46,59,63,67,76,83,94,104,
 112,131,144,144,170,198,201,226,261,268,291,337,
 361,392,437,465,511,567,607,673,736,775,861,946,
 1000]