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A026480 as a simple table

na(n)
11
22
34
45
56
67
79
811
913
1015
1117
1219
1321
1423
1527
1629
1731
1833
1937
2039
2141
2243
2347
2451
2553
2657
2759
2861
2967
3069
3171
3273
3379
3483
3587
3689
3793
3897
39101
40103
41107
42109
43111
44113
45123
46127
47128
48129
49131
50137
51139
52141
53149
54151
55157
56159
57160
58163
59167
60173
61177
62179
63181

[1,2,4,5,6,7,9,11,13,15,17,19,21,23,27,29,31,33,
 37,39,41,43,47,51,53,57,59,61,67,69,71,73,79,83,
 87,89,93,97,101,103,107,109,111,113,123,127,128,
 129,131,137,139,141,149,151,157,159,160,163,167,
 173,177,179,181]