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A306387 as a simple table

na(n)
11
22
32
46
52
627
72
826
97
1031
112
12574
132
1438
1533
16166
172
18879
192
20924
2139
2252
232
2423732
259
2659
2747
281403
292
3034256
312
321626
3355
3473
3547
36230819
372
3880
3961
4050888
412
4265638
432
442709
451734
4694
472
482117920
4911
503038
5177
523536
532
54113448
5565
5697298
5783
58115
592
6092531888
612
62122
632601
6425510
6573
66180350

[1,2,2,6,2,27,2,26,7,31,2,574,2,38,33,166,2,879,2,
 924,39,52,2,23732,9,59,47,1403,2,34256,2,1626,55,
 73,47,230819,2,80,61,50888,2,65638,2,2709,1734,94,
 2,2117920,11,3038,77,3536,2,113448,65,97298,83,
 115,2,92531888,2,122,2601,25510,73,180350]