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A129847 as a simple table

na(n)
01
11
22
35
410
520
642
787
8179
9370
10765
111580
123264
136744
1413933
1528785
1659470
17122865
18253838
19524428
201083466
212238435
224624595
239554390
2419739321
2540781336
2684254032
27174068400
28359624425
29742982225
301534997482
313171296957
326551883314
3313536157460

[1,1,2,5,10,20,42,87,179,370,765,1580,3264,6744,
 13933,28785,59470,122865,253838,524428,1083466,
 2238435,4624595,9554390,19739321,40781336,
 84254032,174068400,359624425,742982225,1534997482,
 3171296957,6551883314,13536157460]