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A236959 as a simple table

na(n)
11
22
34
42
510
64
716
86
922
1028
1110
1212
1340
1414
1546
1652
1758
1820
1922
2072
2124
2226
2382
2488
2532
26100
2734
28106
2936
30112
3142
32130
33136
3446
35148
3650
3752
3854
39166
40172
41178
4260
43190
4464
45196
4666
4770
4874
49226
5076
51232
52238
5380

[1,2,4,2,10,4,16,6,22,28,10,12,40,14,46,52,58,20,
 22,72,24,26,82,88,32,100,34,106,36,112,42,130,136,
 46,148,50,52,54,166,172,178,60,190,64,196,66,70,
 74,226,76,232,238,80]