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A281385 as a simple table

na(n)
00
11
21
34
45
54
69
711
811
99
1016
1119
1220
1319
1416
1525
1629
1731
1831
1929
2025
2136
2241
2344
2445
2544
2641
2736
2849
2955
3059
3161
3261
3359
3455
3549
3664
3771
3876
3979
4080
4179
4276
4371
4464
4581
4689
4795
4899
49101
50101
5199
5295
5389
5481
55100
56109
57116
58121
59124
60125
61124
62121
63116
64109
65100

[0,1,1,4,5,4,9,11,11,9,16,19,20,19,16,25,29,31,31,
 29,25,36,41,44,45,44,41,36,49,55,59,61,61,59,55,
 49,64,71,76,79,80,79,76,71,64,81,89,95,99,101,101,
 99,95,89,81,100,109,116,121,124,125,124,121,116,
 109,100]