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A131065 as a simple table

na(n)
01
11
21
31
47
51
61
713
813
91
101
1119
1231
1319
141
151
1625
1755
1855
1925
201
211
2231
2385
24115
2585
2631
271
281
2937
30121
31205
32205
33121
3437
351
361
3743
38163
39331
40415
41331
42163
4343
441
451
4649
47211
48499
49751
50751
51499
52211
5349
541
551
5655
57265
58715
591255
601507
611255
62715
63265
6455
651

[1,1,1,1,7,1,1,13,13,1,1,19,31,19,1,1,25,55,55,25,
 1,1,31,85,115,85,31,1,1,37,121,205,205,121,37,1,1,
 43,163,331,415,331,163,43,1,1,49,211,499,751,751,
 499,211,49,1,1,55,265,715,1255,1507,1255,715,265,
 55,1]