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A306198 as a simple table

na(n)
11
21
35
42
519
65
741
84
915
1019
11109
1210
13155
1441
1595
168
17271
1815
19341
2038
21205
22109
23505
2420
2595
26155
2745
2882
29811
3095
31929
3216
33545
34271
35779
3630
371331
38341
39775
4076
411639
42205
431805
44218
45285
46505
472161
4840
49287
5095
511355
52310
532755
5445
552071
56164
571705
58811

[1,1,5,2,19,5,41,4,15,19,109,10,155,41,95,8,271,
 15,341,38,205,109,505,20,95,155,45,82,811,95,929,
 16,545,271,779,30,1331,341,775,76,1639,205,1805,
 218,285,505,2161,40,287,95,1355,310,2755,45,2071,
 164,1705,811]