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A177716 as a simple table

na(n)
12
22
33
43
55
65
77
87
911
1011
1111
1211
1311
1411
1513
1613
1717
1817
1919
2019
2119
2219
2323
2423
2523
2623
2723
2823
2929
3029
3129
3229
3331
3431
3531
3631
3737
3837
3937
4037
4137
4237
4341
4441
4543
4643
4747
4847
4947
5047
5147
5247
5347
5447
5547
5647
5747
5847
5953
6053
6153
6253
6353
6453
6553
6653
6753
6853
6959
7059
7159
7259

[2,2,3,3,5,5,7,7,11,11,11,11,11,11,13,13,17,17,19,
 19,19,19,23,23,23,23,23,23,29,29,29,29,31,31,31,
 31,37,37,37,37,37,37,41,41,43,43,47,47,47,47,47,
 47,47,47,47,47,47,47,53,53,53,53,53,53,53,53,53,
 53,59,59,59,59]