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A266900 as a simple table

na(n)
00
12
22
33
44
56
68
76
810
99
1013
119
1215
1310
1419
1513
1620
1716
1823
1915
2024
2116
2230
2319
2430
2518
2639
2716
2835
2924
3037
3127
3239
3327
3445
3521
3646
3733
3845
3931
4051
4126
4256
4331
4453
4533
4655
4737
4863
4929
5069
5135
5260
5344
5468
5538
5670
5741
5871
5937
6078
6138
6276
6348
6483
6541
6690

[0,2,2,3,4,6,8,6,10,9,13,9,15,10,19,13,20,16,23,
 15,24,16,30,19,30,18,39,16,35,24,37,27,39,27,45,
 21,46,33,45,31,51,26,56,31,53,33,55,37,63,29,69,
 35,60,44,68,38,70,41,71,37,78,38,76,48,83,41,90]