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A257961 as a simple table

na(n)
00
10
21
30
42
51
60
73
81
94
102
110
125
132
147
154
161
176
183
190
208
213
2211
236
241
259
264
2712
287
292
3010
315
320
3313
345
3518
3610
372
3815
397
4020
4112
424
4317
449
451
4614
476
4819
4911
503
5116
528
530
5421
558
5629
5716
583
5924
6011
6132
6219
636
6427
6514
661
6722
689
6930
7017
714
7225
7312
7433
7520
767

[0,0,1,0,2,1,0,3,1,4,2,0,5,2,7,4,1,6,3,0,8,3,11,6,
 1,9,4,12,7,2,10,5,0,13,5,18,10,2,15,7,20,12,4,17,
 9,1,14,6,19,11,3,16,8,0,21,8,29,16,3,24,11,32,19,
 6,27,14,1,22,9,30,17,4,25,12,33,20,7]