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A087910 as a simple table

na(n)
11
22
32
45
58
65
75
813
99
1010
1110
1212
1312
1412
1512
1622
1717
1818
1918
2021
2122
2221
2321
2427
2525
2626
2726
2827
2927
3027
3127
3240
3333
3434
3534
3637
3739
3837
3937
4048
4141
4242
4342
4444
4544
4644
4744
4854
4949
5050
5150
5253
5354
5453
5553
5658
5757
5859
5962
6058
6158
6258

[1,2,2,5,8,5,5,13,9,10,10,12,12,12,12,22,17,18,18,
 21,22,21,21,27,25,26,26,27,27,27,27,40,33,34,34,
 37,39,37,37,48,41,42,42,44,44,44,44,54,49,50,50,
 53,54,53,53,58,57,59,62,58,58,58]