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A259117 as a simple table

na(n)
11
21
31
42
53
65
79
818
938
1080
11166
12342
13705
141463
153065
166492
1713917
1830217
1966455
20147920
21332700
22754544
231721596
243943344
259051155
2620789895
2747741587
28109543782
29251076670
30574820868
311314663050
323004304786
336861785924
3415668223170
3535778071864
3681723401730
37186773111883
38427182189689
39977960176139

[1,1,1,2,3,5,9,18,38,80,166,342,705,1463,3065,
 6492,13917,30217,66455,147920,332700,754544,
 1721596,3943344,9051155,20789895,47741587,
 109543782,251076670,574820868,1314663050,
 3004304786,6861785924,15668223170,35778071864,
 81723401730,186773111883,427182189689,
 977960176139]