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A049933 as a simple table

na(n)
11
21
31
44
58
619
735
870
9140
10349
11663
121310
132609
145214
1510425
1620850
1741700
18104249
19198073
20390935
21779265
221557231
233113815
246227316
2512454423
2624908776
2749817517
2899635018
29199270025
30398540046
31797080089
321594160178
333188320356
347970800889
3515144521689

[1,1,1,4,8,19,35,70,140,349,663,1310,2609,5214,
 10425,20850,41700,104249,198073,390935,779265,
 1557231,3113815,6227316,12454423,24908776,
 49817517,99635018,199270025,398540046,797080089,
 1594160178,3188320356,7970800889,15144521689]