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A168422 as a simple table

na(n)
01
11
21
37
44
51
671
739
89
91
101001
11536
12126
1316
141
1518089
169545
172270
18310
1925
201
21398959
22208524
2349995
247120
25645
2636
271
2810391023
295394991
301301139
31190435
3218445
331197
3449
351
36312129649
37161260336
3839066076
395828704
40589750
4141776
422044
4364
441

[1,1,1,7,4,1,71,39,9,1,1001,536,126,16,1,18089,
 9545,2270,310,25,1,398959,208524,49995,7120,645,
 36,1,10391023,5394991,1301139,190435,18445,1197,
 49,1,312129649,161260336,39066076,5828704,589750,
 41776,2044,64,1]