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A131728 as a simple table

na(n)
00
11
21
30
41
53
62
70
82
95
103
110
123
137
144
150
164
179
185
190
205
2111
226
230
246
2513
267
270
287
2915
308
310
328
3317
349
350
369
3719
3810
390
4010
4121
4211
430
4411
4523
4612
470
4812
4925
5013
510
5213
5327
5414
550
5614
5729
5815
590
6015
6131
6216
630
6416
6533
6617
670
6817
6935
7018
710
7218
7337
7419
750
7619
7739
7820
790
8020
8141
8221
830
8421

[0,1,1,0,1,3,2,0,2,5,3,0,3,7,4,0,4,9,5,0,5,11,6,0,
 6,13,7,0,7,15,8,0,8,17,9,0,9,19,10,0,10,21,11,0,
 11,23,12,0,12,25,13,0,13,27,14,0,14,29,15,0,15,31,
 16,0,16,33,17,0,17,35,18,0,18,37,19,0,19,39,20,0,
 20,41,21,0,21]