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A180934 as a simple table

na(n)
11
22
33
45
57
69
711
813
917
1019
1123
1225
1328
1429
1531
1637
1740
1841
1943
2045
2147
2249
2353
2459
2561
2667
2771
2873
2979
3081
3183
3289
3397
34101
35103
36107
37109
38113
39121
40127
41131
42137
43139
44149
45151
46153
47157
48163
49167
50169
51173
52179
53181
54191
55193
56197
57199
58211
59223
60225
61227

[1,2,3,5,7,9,11,13,17,19,23,25,28,29,31,37,40,41,
 43,45,47,49,53,59,61,67,71,73,79,81,83,89,97,101,
 103,107,109,113,121,127,131,137,139,149,151,153,
 157,163,167,169,173,179,181,191,193,197,199,211,
 223,225,227]