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A195875 as a simple table

na(n)
11
25
36
46
57
69
79
810
911
1011
1113
1213
1314
1414
1515
1616
1716
1817
1917
2019
2119
2221
2322
2422
2523
2623
2726
2826
2929
3031
3131
3232
3332
3432
3533
3634
3734
3835
3937
4038
4139
4241
4342
4443
4546
4647
4748
4848
4948
5050
5151
5254
5358
5459
5562
5664
5764
5864
5966
6067
6170
6271
6374
6475
6577
6677
6779
6880
6980

[1,5,6,6,7,9,9,10,11,11,13,13,14,14,15,16,16,17,
 17,19,19,21,22,22,23,23,26,26,29,31,31,32,32,32,
 33,34,34,35,37,38,39,41,42,43,46,47,48,48,48,50,
 51,54,58,59,62,64,64,64,66,67,70,71,74,75,77,77,
 79,80,80]