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A002013 as a simple table

na(n)
01
11
21
32
43
57
613
731
865
9154
10347
11824
121905
134512
1410546
1524935
1658476
17138002
18323894
19763172
201790585
214213061
229878541
2323214728
2454393063
25127687369
26298969219
27701171557
281640683309
293844724417
308991137036
3121054243655
3249211076053

[1,1,1,2,3,7,13,31,65,154,347,824,1905,4512,10546,
 24935,58476,138002,323894,763172,1790585,4213061,
 9878541,23214728,54393063,127687369,298969219,
 701171557,1640683309,3844724417,8991137036,
 21054243655,49211076053]