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A293636 as a simple table

na(n)
11
21
33
46
512
621
739
866
9114
10192
11324
12531
13888
141452
152382
163891
176363
1810329
1916833
2027303
2144349
2271907
23116625
24188859
25306114
26495615
27802632
281299255
292103504
303404259
315510376
328917248
3314431590
3423353131
3537791414
3661150962
3798953434
38160115403
39259085673
40419218803

[1,1,3,6,12,21,39,66,114,192,324,531,888,1452,
 2382,3891,6363,10329,16833,27303,44349,71907,
 116625,188859,306114,495615,802632,1299255,
 2103504,3404259,5510376,8917248,14431590,23353131,
 37791414,61150962,98953434,160115403,259085673,
 419218803]