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A278390 as a simple table

na(n)
11
21
31
41
53
63
71
86
914
1016
111
1210
1340
1485
15105
161
1715
1890
19295
20594
21771
221
2321
24175
25805
262331
274529
286083
291
3028
31308
321876
337280
3419348
3536644
3650464
371
3836
39504
403906
4119404
4266780
43166608
44309537
45434493
461
4745
48780
497470
5045990
51197484
52621180
531476135
542701610
553849715

[1,1,1,1,3,3,1,6,14,16,1,10,40,85,105,1,15,90,295,
 594,771,1,21,175,805,2331,4529,6083,1,28,308,1876,
 7280,19348,36644,50464,1,36,504,3906,19404,66780,
 166608,309537,434493,1,45,780,7470,45990,197484,
 621180,1476135,2701610,3849715]