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A015581 as a simple table

na(n)
00
11
29
386
4819
57801
674304
7707741
86741189
964209406
10611590599
115825362421
1255486214784
13528502745161
145033955780369
1547948115749126
16456702820643979
174350065964541441
1841434107784092864
19394657299879542981
203759086237836351149
2135805062639924875246

[0,1,9,86,819,7801,74304,707741,6741189,64209406,
 611590599,5825362421,55486214784,528502745161,
 5033955780369,47948115749126,456702820643979,
 4350065964541441,41434107784092864,
 394657299879542981,3759086237836351149,
 35805062639924875246]