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A000074 as a simple table

na(n)
11
21
32
44
57
613
725
843
983
10157
11296
12564
131083
142077
154006
167733
1714968
1829044
1956447
20109864
21214197
22418080
23816907
241598040
253129063
266132106
2712027122
2823606527
2946366165
3091127332
31179207074
32352615528
33694182554
341367278759

[1,1,2,4,7,13,25,43,83,157,296,564,1083,2077,4006,
 7733,14968,29044,56447,109864,214197,418080,
 816907,1598040,3129063,6132106,12027122,23606527,
 46366165,91127332,179207074,352615528,694182554,
 1367278759]