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A008406 as a simple table

na(n)
11
21
31
41
51
61
71
81
91
102
113
122
131
141
151
161
172
184
196
206
216
224
232
241
251
261
271
282
295
309
3115
3221
3324
3424
3521
3615
379
385
392
401
411
421
431
442
455
4610
4721
4841
4965
5097
51131
52148
53148
54131
5597
5665
5741
5821
5910
605
612
621
631
641
651
662
675
6811
6924
7056
71115
72221
73402
74663
75980
761312
771557
781646
791557

[1,1,1,1,1,1,1,1,1,2,3,2,1,1,1,1,2,4,6,6,6,4,2,1,
 1,1,1,2,5,9,15,21,24,24,21,15,9,5,2,1,1,1,1,2,5,
 10,21,41,65,97,131,148,148,131,97,65,41,21,10,5,2,
 1,1,1,1,2,5,11,24,56,115,221,402,663,980,1312,
 1557,1646,1557]