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A236965 as a simple table

na(n)
11
21
31
43
55
63
74
89
911
107
1115
129
1310
1421
1523
1613
1729
1815
1933
2035
2118
2239
2341
2422
2524
2625
2751
2853
2927
3028
3163
3265
3334
3469
3537
3675
3739
3881
3983
4043
4189
4245
4395
4448
4549
4699
47105
48111
49113
5057
5158
52119
5360
54125
5564
56131
5767
58135
5969
6070
61141
6273
63153
64155
6578

[1,1,1,3,5,3,4,9,11,7,15,9,10,21,23,13,29,15,33,
 35,18,39,41,22,24,25,51,53,27,28,63,65,34,69,37,
 75,39,81,83,43,89,45,95,48,49,99,105,111,113,57,
 58,119,60,125,64,131,67,135,69,70,141,73,153,155,
 78]