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A102705 as a simple table

na(n)
00
11
22
33
44
55
66
78
810
911
1012
1113
1215
1317
1419
1520
1622
1724
1826
1929
2031
2133
2238
2340
2447

[0,1,2,3,4,5,6,8,10,11,12,13,15,17,19,20,22,24,26,
 29,31,33,38,40,47]