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A278132 as a simple table

na(n)
21
31
41
51
63
71
81
96
105
111
121
1311
1415
157
161
171
1820
1938
2028
219
221
231
2436
2592
2689
2745
2811
291
301
3164
32219
33258
34172
3566
3613
371
381
39113
40513
41721
42577
43295
4491
4515
461
471
48199
491184
501975
511817
521125
53466
54120
5517
561
571
58350
592702
605326
615534
623932
631994
64693
65153
6619
671

[1,1,1,1,3,1,1,6,5,1,1,11,15,7,1,1,20,38,28,9,1,1,
 36,92,89,45,11,1,1,64,219,258,172,66,13,1,1,113,
 513,721,577,295,91,15,1,1,199,1184,1975,1817,1125,
 466,120,17,1,1,350,2702,5326,5534,3932,1994,693,
 153,19,1]