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A374475 as a simple table

na(n)
12
23
35
47
58
611
713
815
917
1019
1121
1223
1327
1429
1531
1632
1733
1835
1937
2039
2141
2243
2345
2447
2550
2651
2753
2855
2957
3059
3161
3263
3365
3467
3569
3671
3773
3875
3977
4079
4183
4285
4387
4489
4591
4693
4795
4897
4998
5099
51101
52103
53105
54107
55109
56111
57113
58115
59117
60119
61123
62125
63127
64128
65129
66131
67133
68135
69137
70139
71141
72143
73145
74147

[2,3,5,7,8,11,13,15,17,19,21,23,27,29,31,32,33,35,
 37,39,41,43,45,47,50,51,53,55,57,59,61,63,65,67,
 69,71,73,75,77,79,83,85,87,89,91,93,95,97,98,99,
 101,103,105,107,109,111,113,115,117,119,123,125,
 127,128,129,131,133,135,137,139,141,143,145,147]