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A166890 as a simple table

na(n)
11
22
31
49
54
61
778
830
96
101
111038
12364
1363
148
151
1618968
176233
18986
19108
2010
211
22443595
23139008
2420685
252072
26165
2712
281
2912681960
303833052
31545736
3251494
333750
34234
3514
361
37429244197
38126105168
3917365336
401569920
41107760
426148
43315
4416
451
4616801151910

[1,2,1,9,4,1,78,30,6,1,1038,364,63,8,1,18968,6233,
 986,108,10,1,443595,139008,20685,2072,165,12,1,
 12681960,3833052,545736,51494,3750,234,14,1,
 429244197,126105168,17365336,1569920,107760,6148,
 315,16,1,16801151910]