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A101845 as a simple table

na(n)
11
21
33
41
57
616
71
815
961
10115
111
1231
13206
14626
151056
161
1763
18659
192989
207554
2111774
221
23127
242052
2513308
2647349
27105099
28154624
291
30255
316297
3256935
33274677
34824331
351660957
362337507
371
38511
3919162
40237862
411518478
425960818
4315747154
4429428654

[1,1,3,1,7,16,1,15,61,115,1,31,206,626,1056,1,63,
 659,2989,7554,11774,1,127,2052,13308,47349,105099,
 154624,1,255,6297,56935,274677,824331,1660957,
 2337507,1,511,19162,237862,1518478,5960818,
 15747154,29428654]