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A215090 as a simple table

na(n)
00
11
22
33
43
54
65
76
86
97
108
119
129
1310
1411
1512
169
1710
1811
1912
2012
2113
2214
2315
2415
2516
2617
2718
2818
2919
3020
3121
3218
3319
3420
3521
3621
3722
3823
3924
4024
4125
4226
4327
4427
4528
4629
4730
4827
4928
5029
5130
5230
5331
5432
5533
5633
5734
5835
5936
6036
6137
6238
6339
6427
6528
6629
6730
6830
6931
7032

[0,1,2,3,3,4,5,6,6,7,8,9,9,10,11,12,9,10,11,12,12,
 13,14,15,15,16,17,18,18,19,20,21,18,19,20,21,21,
 22,23,24,24,25,26,27,27,28,29,30,27,28,29,30,30,
 31,32,33,33,34,35,36,36,37,38,39,27,28,29,30,30,
 31,32]