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A031006 as a simple table

na(n)
11
22
33
44
55
66
77
89
91
1013
1115
1217
1319
1421
1512
1625
172
1829
1931
2033
2135
2214
2328
2441
253
2645
2747
2849
2916
3030
3144
3257
334
3461
3563
3618
3732
3846
3960
4073
415
4277
436
4420
4534
4648
4762
4876
4991
507
5197
52100
53103
54106
55109
5696
579
5810
59121
60124
61127
62130
63133
6411

[1,2,3,4,5,6,7,9,1,13,15,17,19,21,12,25,2,29,31,
 33,35,14,28,41,3,45,47,49,16,30,44,57,4,61,63,18,
 32,46,60,73,5,77,6,20,34,48,62,76,91,7,97,100,103,
 106,109,96,9,10,121,124,127,130,133,11]