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A355729 as a simple table

na(n)
01
12
23
34
45
55
67
77
89
99
109
119
1213
1313
1413
1513
1617
1717
1817
1917
2017
2117
2217
2317
2425
2525
2625
2725
2825
2925
3025
3125
3233
3333
3433
3533
3633
3733
3833
3933
4033
4133
4233
4333
4433
4533
4633
4733
4849
4949
5049
5149
5249
5349
5449
5549
5649
5749
5849
5949
6049
6149
6249
6349
6465
6565
6665

[1,2,3,4,5,5,7,7,9,9,9,9,13,13,13,13,17,17,17,17,
 17,17,17,17,25,25,25,25,25,25,25,25,33,33,33,33,
 33,33,33,33,33,33,33,33,33,33,33,33,49,49,49,49,
 49,49,49,49,49,49,49,49,49,49,49,49,65,65,65]