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A121261 as a simple table

na(n)
10
20
31
41
52
62
73
83
95
105
117
127
138
148
1511
1611
1712
1812
1913
2013
2116
2216
2317
2417
2518
2618
2719
2819
2920
3020
3123
3223
3327
3427
3528
3628
3729
3829
3930
4030
4131
4231
4332
4432
4536
4636
4737
4837
4941
5041
5142
5242
5343
5443
5544
5644
5745
5845
5947
6047
6148
6248
6350
6450
6552
6652
6753
6853
6959
7059
7161
7261
7363
7463

[0,0,1,1,2,2,3,3,5,5,7,7,8,8,11,11,12,12,13,13,16,
 16,17,17,18,18,19,19,20,20,23,23,27,27,28,28,29,
 29,30,30,31,31,32,32,36,36,37,37,41,41,42,42,43,
 43,44,44,45,45,47,47,48,48,50,50,52,52,53,53,59,
 59,61,61,63,63]