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A237449 as a simple table

na(n)
00
10
21
31
41
54
64
75
85
95
107
117
127
137
1413
1513
1614
1714
1814
1917
2017
2118
2218
2318
2420
2520
2620
2720
2825
2925
3026
3126
3226
3328
3428
3528
3628
3731
3831
3931
4031
4131
4241
4341
4442
4542
4642
4745
4845
4946
5046
5146
5248
5348
5448
5548
5654
5754
5855
5955
6055
6158
6258
6359
6459
6559
6661
6761
6861
6961

[0,0,1,1,1,4,4,5,5,5,7,7,7,7,13,13,14,14,14,17,17,
 18,18,18,20,20,20,20,25,25,26,26,26,28,28,28,28,
 31,31,31,31,31,41,41,42,42,42,45,45,46,46,46,48,
 48,48,48,54,54,55,55,55,58,58,59,59,59,61,61,61,
 61]